diff --git a/.vscode/launch.json b/.vscode/launch.json
deleted file mode 100644
index 8028021..0000000
--- a/.vscode/launch.json
+++ /dev/null
@@ -1,20 +0,0 @@
-{
-    // Use IntelliSense to learn about possible attributes.
-    // Hover to view descriptions of existing attributes.
-    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
-    "version": "0.2.0",
-    "configurations": [
-         {
-            "name": "Launch main.go",
-            "type": "go",
-            "request": "launch",
-            "mode": "auto",   // 也可選 debug/test/remote
-            "program": "${workspaceFolder}/blockchain.go", // 或你的專案主程式
-            "env": {
-                "GOPATH": "/home/wang/go"
-            },
-            // "args": ["-arg1", "value"]
-        }
-
-    ]
-}
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
deleted file mode 100644
index 58a6948..0000000
--- a/.vscode/settings.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-    "editor.fontFamily": "Fira Code, 'Fira Code', monospace"
-}
\ No newline at end of file
diff --git a/client/blockchainservice/blockchain_service.go b/client/blockchainservice/blockchain_service.go
index d269a8b..8ce2ec6 100644
--- a/client/blockchainservice/blockchain_service.go
+++ b/client/blockchainservice/blockchain_service.go
@@ -1,5 +1,5 @@
 // Code generated by goctl. DO NOT EDIT.
-// goctl 1.8.5
+// goctl 1.8.1
 // Source: blockchain.proto
 
 package blockchainservice
@@ -7,13 +7,14 @@ package blockchainservice
 import (
 	"context"
 
-	app_cloudep_blockchain "blockchain/gen_result/pb/code.30cm.net/digimon/app-cloudep-blockchain"
+	"blockchain/gen_result/pb/code.30cm.net/digimon/app-cloudep-blockchain"
 
 	"github.com/zeromicro/go-zero/zrpc"
 	"google.golang.org/grpc"
 )
 
 type (
+	HistoryReq          = app_cloudep_blockchain.HistoryReq
 	ListSymbolsRequest  = app_cloudep_blockchain.ListSymbolsRequest
 	ListSymbolsResponse = app_cloudep_blockchain.ListSymbolsResponse
 	NoneReq             = app_cloudep_blockchain.NoneReq
@@ -23,6 +24,7 @@ type (
 	BlockchainService interface {
 		// ListSymbols retrieves all available trading symbols.
 		ListSymbols(ctx context.Context, in *ListSymbolsRequest, opts ...grpc.CallOption) (*ListSymbolsResponse, error)
+		GetHistoryKlineData(ctx context.Context, in *HistoryReq, opts ...grpc.CallOption) (*OKResp, error)
 		// Ping is a health-check endpoint.
 		Ping(ctx context.Context, in *NoneReq, opts ...grpc.CallOption) (*OKResp, error)
 	}
@@ -44,6 +46,11 @@ func (m *defaultBlockchainService) ListSymbols(ctx context.Context, in *ListSymb
 	return client.ListSymbols(ctx, in, opts...)
 }
 
+func (m *defaultBlockchainService) GetHistoryKlineData(ctx context.Context, in *HistoryReq, opts ...grpc.CallOption) (*OKResp, error) {
+	client := app_cloudep_blockchain.NewBlockchainServiceClient(m.cli.Conn())
+	return client.GetHistoryKlineData(ctx, in, opts...)
+}
+
 // Ping is a health-check endpoint.
 func (m *defaultBlockchainService) Ping(ctx context.Context, in *NoneReq, opts ...grpc.CallOption) (*OKResp, error) {
 	client := app_cloudep_blockchain.NewBlockchainServiceClient(m.cli.Conn())
diff --git a/etc/blockchain.yaml b/etc/blockchain.yaml
index 0a400f4..9d6ba1c 100644
--- a/etc/blockchain.yaml
+++ b/etc/blockchain.yaml
@@ -12,12 +12,12 @@ Binance:
   WorkerSize: 20
 
 RedisCluster:
-  Host: 127.0.0.1:6379
+  Host: 10.0.0.13:6379
   Type: node
 
 Cassandra:
   Hosts:
-    - 127.0.0.1
+    - 10.0.0.13
   Port: 9042
   Keyspace: digimon
   UseAuth: true
diff --git a/gen_result/pb/code.30cm.net/digimon/app-cloudep-blockchain/blockchain.pb.go b/gen_result/pb/code.30cm.net/digimon/app-cloudep-blockchain/blockchain.pb.go
index 2c392ca..26c7afc 100644
--- a/gen_result/pb/code.30cm.net/digimon/app-cloudep-blockchain/blockchain.pb.go
+++ b/gen_result/pb/code.30cm.net/digimon/app-cloudep-blockchain/blockchain.pb.go
@@ -1,18 +1,16 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.36.6
-// 	protoc        v3.21.12
+// 	protoc-gen-go v1.36.1
+// 	protoc        v3.19.4
 // source: generate/rpc/blockchain.proto
 
 package app_cloudep_blockchain
 
 import (
-	reflect "reflect"
-	sync "sync"
-	unsafe "unsafe"
-
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
 )
 
 const (
@@ -264,58 +262,159 @@ func (x *Symbol) GetQuoteAssetPrecision() int32 {
 	return 0
 }
 
+type HistoryReq struct {
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Symbol        string                 `protobuf:"bytes,1,opt,name=symbol,proto3" json:"symbol,omitempty"`     // 交易對名稱 （BTCUSDT）
+	Interval      string                 `protobuf:"bytes,2,opt,name=interval,proto3" json:"interval,omitempty"` // 4h 1m 1d ...
+	StartTime     string                 `protobuf:"bytes,3,opt,name=start_time,json=startTime,proto3" json:"start_time,omitempty"`
+	EndTime       string                 `protobuf:"bytes,4,opt,name=end_time,json=endTime,proto3" json:"end_time,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *HistoryReq) Reset() {
+	*x = HistoryReq{}
+	mi := &file_generate_rpc_blockchain_proto_msgTypes[5]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *HistoryReq) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*HistoryReq) ProtoMessage() {}
+
+func (x *HistoryReq) ProtoReflect() protoreflect.Message {
+	mi := &file_generate_rpc_blockchain_proto_msgTypes[5]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use HistoryReq.ProtoReflect.Descriptor instead.
+func (*HistoryReq) Descriptor() ([]byte, []int) {
+	return file_generate_rpc_blockchain_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *HistoryReq) GetSymbol() string {
+	if x != nil {
+		return x.Symbol
+	}
+	return ""
+}
+
+func (x *HistoryReq) GetInterval() string {
+	if x != nil {
+		return x.Interval
+	}
+	return ""
+}
+
+func (x *HistoryReq) GetStartTime() string {
+	if x != nil {
+		return x.StartTime
+	}
+	return ""
+}
+
+func (x *HistoryReq) GetEndTime() string {
+	if x != nil {
+		return x.EndTime
+	}
+	return ""
+}
+
 var File_generate_rpc_blockchain_proto protoreflect.FileDescriptor
 
-const file_generate_rpc_blockchain_proto_rawDesc = "" +
-	"\n" +
-	"\x1dgenerate/rpc/blockchain.proto\x12\n" +
-	"blockchain\"\b\n" +
-	"\x06OKResp\"\t\n" +
-	"\aNoneReq\"\x14\n" +
-	"\x12ListSymbolsRequest\"C\n" +
-	"\x13ListSymbolsResponse\x12,\n" +
-	"\asymbols\x18\x01 \x03(\v2\x12.blockchain.SymbolR\asymbols\"\xde\x01\n" +
-	"\x06Symbol\x12\x16\n" +
-	"\x06symbol\x18\x01 \x01(\tR\x06symbol\x12\x16\n" +
-	"\x06status\x18\x02 \x01(\tR\x06status\x12\x1d\n" +
-	"\n" +
-	"base_asset\x18\x03 \x01(\tR\tbaseAsset\x120\n" +
-	"\x14base_asset_precision\x18\x04 \x01(\x05R\x12baseAssetPrecision\x12\x1f\n" +
-	"\vquote_asset\x18\x05 \x01(\tR\n" +
-	"quoteAsset\x122\n" +
-	"\x15quote_asset_precision\x18\x06 \x01(\x05R\x13quoteAssetPrecision2\x94\x01\n" +
-	"\x11BlockchainService\x12N\n" +
-	"\vListSymbols\x12\x1e.blockchain.ListSymbolsRequest\x1a\x1f.blockchain.ListSymbolsResponse\x12/\n" +
-	"\x04Ping\x12\x13.blockchain.NoneReq\x1a\x12.blockchain.OKRespB.Z,code.30cm.net/digimon/app-cloudep-blockchainb\x06proto3"
+var file_generate_rpc_blockchain_proto_rawDesc = []byte{
+	0x0a, 0x1d, 0x67, 0x65, 0x6e, 0x65, 0x72, 0x61, 0x74, 0x65, 0x2f, 0x72, 0x70, 0x63, 0x2f, 0x62,
+	0x6c, 0x6f, 0x63, 0x6b, 0x63, 0x68, 0x61, 0x69, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12,
+	0x0a, 0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x63, 0x68, 0x61, 0x69, 0x6e, 0x22, 0x08, 0x0a, 0x06, 0x4f,
+	0x4b, 0x52, 0x65, 0x73, 0x70, 0x22, 0x09, 0x0a, 0x07, 0x4e, 0x6f, 0x6e, 0x65, 0x52, 0x65, 0x71,
+	0x22, 0x14, 0x0a, 0x12, 0x4c, 0x69, 0x73, 0x74, 0x53, 0x79, 0x6d, 0x62, 0x6f, 0x6c, 0x73, 0x52,
+	0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x22, 0x43, 0x0a, 0x13, 0x4c, 0x69, 0x73, 0x74, 0x53, 0x79,
+	0x6d, 0x62, 0x6f, 0x6c, 0x73, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x2c, 0x0a,
+	0x07, 0x73, 0x79, 0x6d, 0x62, 0x6f, 0x6c, 0x73, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x12,
+	0x2e, 0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x63, 0x68, 0x61, 0x69, 0x6e, 0x2e, 0x53, 0x79, 0x6d, 0x62,
+	0x6f, 0x6c, 0x52, 0x07, 0x73, 0x79, 0x6d, 0x62, 0x6f, 0x6c, 0x73, 0x22, 0xde, 0x01, 0x0a, 0x06,
+	0x53, 0x79, 0x6d, 0x62, 0x6f, 0x6c, 0x12, 0x16, 0x0a, 0x06, 0x73, 0x79, 0x6d, 0x62, 0x6f, 0x6c,
+	0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x73, 0x79, 0x6d, 0x62, 0x6f, 0x6c, 0x12, 0x16,
+	0x0a, 0x06, 0x73, 0x74, 0x61, 0x74, 0x75, 0x73, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06,
+	0x73, 0x74, 0x61, 0x74, 0x75, 0x73, 0x12, 0x1d, 0x0a, 0x0a, 0x62, 0x61, 0x73, 0x65, 0x5f, 0x61,
+	0x73, 0x73, 0x65, 0x74, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x09, 0x62, 0x61, 0x73, 0x65,
+	0x41, 0x73, 0x73, 0x65, 0x74, 0x12, 0x30, 0x0a, 0x14, 0x62, 0x61, 0x73, 0x65, 0x5f, 0x61, 0x73,
+	0x73, 0x65, 0x74, 0x5f, 0x70, 0x72, 0x65, 0x63, 0x69, 0x73, 0x69, 0x6f, 0x6e, 0x18, 0x04, 0x20,
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+	0x5f, 0x61, 0x73, 0x73, 0x65, 0x74, 0x18, 0x05, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a, 0x71, 0x75,
+	0x6f, 0x74, 0x65, 0x41, 0x73, 0x73, 0x65, 0x74, 0x12, 0x32, 0x0a, 0x15, 0x71, 0x75, 0x6f, 0x74,
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+	0x73, 0x65, 0x74, 0x50, 0x72, 0x65, 0x63, 0x69, 0x73, 0x69, 0x6f, 0x6e, 0x22, 0x7a, 0x0a, 0x0a,
+	0x48, 0x69, 0x73, 0x74, 0x6f, 0x72, 0x79, 0x52, 0x65, 0x71, 0x12, 0x16, 0x0a, 0x06, 0x73, 0x79,
+	0x6d, 0x62, 0x6f, 0x6c, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x73, 0x79, 0x6d, 0x62,
+	0x6f, 0x6c, 0x12, 0x1a, 0x0a, 0x08, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x76, 0x61, 0x6c, 0x18, 0x02,
+	0x20, 0x01, 0x28, 0x09, 0x52, 0x08, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x76, 0x61, 0x6c, 0x12, 0x1d,
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+	0x08, 0x65, 0x6e, 0x64, 0x5f, 0x74, 0x69, 0x6d, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x52,
+	0x07, 0x65, 0x6e, 0x64, 0x54, 0x69, 0x6d, 0x65, 0x32, 0xd7, 0x01, 0x0a, 0x11, 0x42, 0x6c, 0x6f,
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+	0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x63, 0x68, 0x61, 0x69, 0x6e, 0x2e, 0x4c, 0x69, 0x73, 0x74, 0x53,
+	0x79, 0x6d, 0x62, 0x6f, 0x6c, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x1f, 0x2e,
+	0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x63, 0x68, 0x61, 0x69, 0x6e, 0x2e, 0x4c, 0x69, 0x73, 0x74, 0x53,
+	0x79, 0x6d, 0x62, 0x6f, 0x6c, 0x73, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x41,
+	0x0a, 0x13, 0x47, 0x65, 0x74, 0x48, 0x69, 0x73, 0x74, 0x6f, 0x72, 0x79, 0x4b, 0x6c, 0x69, 0x6e,
+	0x65, 0x44, 0x61, 0x74, 0x61, 0x12, 0x16, 0x2e, 0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x63, 0x68, 0x61,
+	0x69, 0x6e, 0x2e, 0x48, 0x69, 0x73, 0x74, 0x6f, 0x72, 0x79, 0x52, 0x65, 0x71, 0x1a, 0x12, 0x2e,
+	0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x63, 0x68, 0x61, 0x69, 0x6e, 0x2e, 0x4f, 0x4b, 0x52, 0x65, 0x73,
+	0x70, 0x12, 0x2f, 0x0a, 0x04, 0x50, 0x69, 0x6e, 0x67, 0x12, 0x13, 0x2e, 0x62, 0x6c, 0x6f, 0x63,
+	0x6b, 0x63, 0x68, 0x61, 0x69, 0x6e, 0x2e, 0x4e, 0x6f, 0x6e, 0x65, 0x52, 0x65, 0x71, 0x1a, 0x12,
+	0x2e, 0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x63, 0x68, 0x61, 0x69, 0x6e, 0x2e, 0x4f, 0x4b, 0x52, 0x65,
+	0x73, 0x70, 0x42, 0x2e, 0x5a, 0x2c, 0x63, 0x6f, 0x64, 0x65, 0x2e, 0x33, 0x30, 0x63, 0x6d, 0x2e,
+	0x6e, 0x65, 0x74, 0x2f, 0x64, 0x69, 0x67, 0x69, 0x6d, 0x6f, 0x6e, 0x2f, 0x61, 0x70, 0x70, 0x2d,
+	0x63, 0x6c, 0x6f, 0x75, 0x64, 0x65, 0x70, 0x2d, 0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x63, 0x68, 0x61,
+	0x69, 0x6e, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
 
 var (
 	file_generate_rpc_blockchain_proto_rawDescOnce sync.Once
-	file_generate_rpc_blockchain_proto_rawDescData []byte
+	file_generate_rpc_blockchain_proto_rawDescData = file_generate_rpc_blockchain_proto_rawDesc
 )
 
 func file_generate_rpc_blockchain_proto_rawDescGZIP() []byte {
 	file_generate_rpc_blockchain_proto_rawDescOnce.Do(func() {
-		file_generate_rpc_blockchain_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_generate_rpc_blockchain_proto_rawDesc), len(file_generate_rpc_blockchain_proto_rawDesc)))
+		file_generate_rpc_blockchain_proto_rawDescData = protoimpl.X.CompressGZIP(file_generate_rpc_blockchain_proto_rawDescData)
 	})
 	return file_generate_rpc_blockchain_proto_rawDescData
 }
 
-var file_generate_rpc_blockchain_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
+var file_generate_rpc_blockchain_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
 var file_generate_rpc_blockchain_proto_goTypes = []any{
 	(*OKResp)(nil),              // 0: blockchain.OKResp
 	(*NoneReq)(nil),             // 1: blockchain.NoneReq
 	(*ListSymbolsRequest)(nil),  // 2: blockchain.ListSymbolsRequest
 	(*ListSymbolsResponse)(nil), // 3: blockchain.ListSymbolsResponse
 	(*Symbol)(nil),              // 4: blockchain.Symbol
+	(*HistoryReq)(nil),          // 5: blockchain.HistoryReq
 }
 var file_generate_rpc_blockchain_proto_depIdxs = []int32{
 	4, // 0: blockchain.ListSymbolsResponse.symbols:type_name -> blockchain.Symbol
 	2, // 1: blockchain.BlockchainService.ListSymbols:input_type -> blockchain.ListSymbolsRequest
-	1, // 2: blockchain.BlockchainService.Ping:input_type -> blockchain.NoneReq
-	3, // 3: blockchain.BlockchainService.ListSymbols:output_type -> blockchain.ListSymbolsResponse
-	0, // 4: blockchain.BlockchainService.Ping:output_type -> blockchain.OKResp
-	3, // [3:5] is the sub-list for method output_type
-	1, // [1:3] is the sub-list for method input_type
+	5, // 2: blockchain.BlockchainService.GetHistoryKlineData:input_type -> blockchain.HistoryReq
+	1, // 3: blockchain.BlockchainService.Ping:input_type -> blockchain.NoneReq
+	3, // 4: blockchain.BlockchainService.ListSymbols:output_type -> blockchain.ListSymbolsResponse
+	0, // 5: blockchain.BlockchainService.GetHistoryKlineData:output_type -> blockchain.OKResp
+	0, // 6: blockchain.BlockchainService.Ping:output_type -> blockchain.OKResp
+	4, // [4:7] is the sub-list for method output_type
+	1, // [1:4] is the sub-list for method input_type
 	1, // [1:1] is the sub-list for extension type_name
 	1, // [1:1] is the sub-list for extension extendee
 	0, // [0:1] is the sub-list for field type_name
@@ -330,9 +429,9 @@ func file_generate_rpc_blockchain_proto_init() {
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: unsafe.Slice(unsafe.StringData(file_generate_rpc_blockchain_proto_rawDesc), len(file_generate_rpc_blockchain_proto_rawDesc)),
+			RawDescriptor: file_generate_rpc_blockchain_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   5,
+			NumMessages:   6,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
@@ -341,6 +440,7 @@ func file_generate_rpc_blockchain_proto_init() {
 		MessageInfos:      file_generate_rpc_blockchain_proto_msgTypes,
 	}.Build()
 	File_generate_rpc_blockchain_proto = out.File
+	file_generate_rpc_blockchain_proto_rawDesc = nil
 	file_generate_rpc_blockchain_proto_goTypes = nil
 	file_generate_rpc_blockchain_proto_depIdxs = nil
 }
diff --git a/gen_result/pb/code.30cm.net/digimon/app-cloudep-blockchain/blockchain_grpc.pb.go b/gen_result/pb/code.30cm.net/digimon/app-cloudep-blockchain/blockchain_grpc.pb.go
index d0af9f0..5855f47 100644
--- a/gen_result/pb/code.30cm.net/digimon/app-cloudep-blockchain/blockchain_grpc.pb.go
+++ b/gen_result/pb/code.30cm.net/digimon/app-cloudep-blockchain/blockchain_grpc.pb.go
@@ -1,14 +1,13 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
 // - protoc-gen-go-grpc v1.5.1
-// - protoc             v3.21.12
+// - protoc             v3.19.4
 // source: generate/rpc/blockchain.proto
 
 package app_cloudep_blockchain
 
 import (
 	context "context"
-
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
@@ -20,8 +19,9 @@ import (
 const _ = grpc.SupportPackageIsVersion9
 
 const (
-	BlockchainService_ListSymbols_FullMethodName = "/blockchain.BlockchainService/ListSymbols"
-	BlockchainService_Ping_FullMethodName        = "/blockchain.BlockchainService/Ping"
+	BlockchainService_ListSymbols_FullMethodName         = "/blockchain.BlockchainService/ListSymbols"
+	BlockchainService_GetHistoryKlineData_FullMethodName = "/blockchain.BlockchainService/GetHistoryKlineData"
+	BlockchainService_Ping_FullMethodName                = "/blockchain.BlockchainService/Ping"
 )
 
 // BlockchainServiceClient is the client API for BlockchainService service.
@@ -30,6 +30,7 @@ const (
 type BlockchainServiceClient interface {
 	// ListSymbols retrieves all available trading symbols.
 	ListSymbols(ctx context.Context, in *ListSymbolsRequest, opts ...grpc.CallOption) (*ListSymbolsResponse, error)
+	GetHistoryKlineData(ctx context.Context, in *HistoryReq, opts ...grpc.CallOption) (*OKResp, error)
 	// Ping is a health-check endpoint.
 	Ping(ctx context.Context, in *NoneReq, opts ...grpc.CallOption) (*OKResp, error)
 }
@@ -52,6 +53,16 @@ func (c *blockchainServiceClient) ListSymbols(ctx context.Context, in *ListSymbo
 	return out, nil
 }
 
+func (c *blockchainServiceClient) GetHistoryKlineData(ctx context.Context, in *HistoryReq, opts ...grpc.CallOption) (*OKResp, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(OKResp)
+	err := c.cc.Invoke(ctx, BlockchainService_GetHistoryKlineData_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *blockchainServiceClient) Ping(ctx context.Context, in *NoneReq, opts ...grpc.CallOption) (*OKResp, error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(OKResp)
@@ -68,6 +79,7 @@ func (c *blockchainServiceClient) Ping(ctx context.Context, in *NoneReq, opts ..
 type BlockchainServiceServer interface {
 	// ListSymbols retrieves all available trading symbols.
 	ListSymbols(context.Context, *ListSymbolsRequest) (*ListSymbolsResponse, error)
+	GetHistoryKlineData(context.Context, *HistoryReq) (*OKResp, error)
 	// Ping is a health-check endpoint.
 	Ping(context.Context, *NoneReq) (*OKResp, error)
 	mustEmbedUnimplementedBlockchainServiceServer()
@@ -83,6 +95,9 @@ type UnimplementedBlockchainServiceServer struct{}
 func (UnimplementedBlockchainServiceServer) ListSymbols(context.Context, *ListSymbolsRequest) (*ListSymbolsResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ListSymbols not implemented")
 }
+func (UnimplementedBlockchainServiceServer) GetHistoryKlineData(context.Context, *HistoryReq) (*OKResp, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetHistoryKlineData not implemented")
+}
 func (UnimplementedBlockchainServiceServer) Ping(context.Context, *NoneReq) (*OKResp, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Ping not implemented")
 }
@@ -125,6 +140,24 @@ func _BlockchainService_ListSymbols_Handler(srv interface{}, ctx context.Context
 	return interceptor(ctx, in, info, handler)
 }
 
+func _BlockchainService_GetHistoryKlineData_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(HistoryReq)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(BlockchainServiceServer).GetHistoryKlineData(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: BlockchainService_GetHistoryKlineData_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(BlockchainServiceServer).GetHistoryKlineData(ctx, req.(*HistoryReq))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _BlockchainService_Ping_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(NoneReq)
 	if err := dec(in); err != nil {
@@ -154,6 +187,10 @@ var BlockchainService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "ListSymbols",
 			Handler:    _BlockchainService_ListSymbols_Handler,
 		},
+		{
+			MethodName: "GetHistoryKlineData",
+			Handler:    _BlockchainService_GetHistoryKlineData_Handler,
+		},
 		{
 			MethodName: "Ping",
 			Handler:    _BlockchainService_Ping_Handler,
diff --git a/generate/rpc/blockchain.proto b/generate/rpc/blockchain.proto
index 333e7e5..8de42f1 100644
--- a/generate/rpc/blockchain.proto
+++ b/generate/rpc/blockchain.proto
@@ -26,9 +26,17 @@ message Symbol {
   int32 quote_asset_precision = 6; // 報價資產顯示的小數位數
 }
 
+message HistoryReq {
+  string symbol = 1; // 交易對名稱 （BTCUSDT）
+  string interval =2; // 4h 1m 1d ...
+  string start_time=3;
+  string end_time=4;
+}
+
 service BlockchainService{
   // ListSymbols retrieves all available trading symbols.
   rpc ListSymbols(ListSymbolsRequest) returns(ListSymbolsResponse);
+  rpc GetHistoryKlineData(HistoryReq)returns(OKResp);
   // Ping is a health-check endpoint.
   rpc Ping(NoneReq) returns(OKResp);
 }
diff --git a/internal/domain/blockchain/errors.go b/internal/domain/blockchain/errors.go
index 4e2c601..760760f 100644
--- a/internal/domain/blockchain/errors.go
+++ b/internal/domain/blockchain/errors.go
@@ -7,4 +7,5 @@ const CodeBlockchain uint32 = 10
 const (
 	FailedToGetSymbolFormBinanceErrorCode errs.ErrorCode = 1
 	FailedToUpsertBinanceErrorCode        errs.ErrorCode = 2
+	FailedToListBinanceKlineErrorCode     errs.ErrorCode = 3
 )
diff --git a/internal/domain/repository/data_source.go b/internal/domain/repository/data_source.go
index 1a98be4..b695de7 100644
--- a/internal/domain/repository/data_source.go
+++ b/internal/domain/repository/data_source.go
@@ -14,11 +14,12 @@ type Downloader interface {
 	// FetchHistoryKline 抓歷史 K 線資料
 	FetchHistoryKline(ctx context.Context, param QueryKline) ([]*entity.Kline, error)
 	SaveHistoryKline(ctx context.Context, data []*entity.Kline) error
+	GetKline(ctx context.Context, param QueryKline) ([]entity.Kline, error)
 }
 
 type QueryKline struct {
-	Symbol        string
-	Interval      string
-	StartUnixNano int64
-	EndUnixNano   int64
+	Symbol    string
+	Interval  string
+	StartTime int64
+	EndTime   int64
 }
diff --git a/internal/domain/usecase/data_source.go b/internal/domain/usecase/data_source.go
index 50cba57..4601f7c 100644
--- a/internal/domain/usecase/data_source.go
+++ b/internal/domain/usecase/data_source.go
@@ -7,6 +7,7 @@ import (
 type DataSourceUseCase interface {
 	GetSymbols(ctx context.Context) ([]*Symbol, error)
 	UpsertKline(ctx context.Context, data QueryKline) error
+	ListKline(ctx context.Context, param QueryKline) ([]Candle, error)
 }
 
 // Symbol 代表交易對資訊
@@ -20,8 +21,25 @@ type Symbol struct {
 }
 
 type QueryKline struct {
-	Symbol        string
-	Interval      string
-	StartUnixNano int64
-	EndUnixNano   int64
+	Symbol    string
+	Interval  string
+	StartTime int64
+	EndTime   int64
+}
+
+type Candle struct {
+	OpenTime                 int64  `json:"open_time"`                    // 開盤時間（毫秒），clustering key，用於時序查詢
+	Open                     string `json:"open"`                         // 開盤價
+	High                     string `json:"high"`                         // 最高價
+	Low                      string `json:"low"`                          // 最低價
+	Close                    string `json:"close"`                        // 收盤價
+	Volume                   string `json:"volume" `                      // 成交量
+	CloseTime                int64  `json:"close_time" `                  // 收盤時間（毫秒）
+	QuoteAssetVolume         string `json:"quote_asset_volume" `          // 成交額（以報價資產計）
+	NumberOfTrades           int    `json:"number_of_trades"`             // 交易筆數
+	TakerBuyBaseAssetVolume  string `json:"taker_buy_base_asset_volume"`  // 主動買入成交量
+	TakerBuyQuoteAssetVolume string `json:"taker_buy_quote_asset_volume"` // 主動買入成交額
+	Symbol                   string `json:"symbol"`                       // 交易對，partition key
+	// K 線時間區間，partition key // 12h,15m,1d,1h,1m,1s,2h,30m,3m,4h,5m,6h,8h
+	Interval string `json:"interval"`
 }
diff --git a/internal/lib/strategy/ema.go b/internal/lib/strategy/ema.go
new file mode 100644
index 0000000..e2c704c
--- /dev/null
+++ b/internal/lib/strategy/ema.go
@@ -0,0 +1,27 @@
+package strategy
+
+import "github.com/shopspring/decimal"
+
+/************** EMA 指數移動平均 **************/
+type EMA struct {
+	n   int
+	alp decimal.Decimal // 平滑係數 α = 2 / (n + 1)
+	val decimal.Decimal // 當前EMA值
+	ok  bool
+}
+
+func NewEMA(n int) *EMA {
+	return &EMA{n: n, alp: decimal.NewFromFloat(2.0).Div(decimal.NewFromInt(int64(n + 1)))}
+}
+
+func (e *EMA) Push(close decimal.Decimal) (decimal.Decimal, bool) {
+	if !e.ok {
+		// 第一筆資料直接當作EMA初始值
+		e.val = close
+		e.ok = true
+		return e.val, false
+	}
+	// EMA計算公式
+	e.val = e.alp.Mul(close).Add(decimal.NewFromInt(1).Sub(e.alp).Mul(e.val))
+	return e.val, true
+}
diff --git a/internal/lib/strategy/entity.go b/internal/lib/strategy/entity.go
new file mode 100644
index 0000000..0118a4d
--- /dev/null
+++ b/internal/lib/strategy/entity.go
@@ -0,0 +1,17 @@
+package strategy
+
+import (
+	"github.com/shopspring/decimal"
+	"time"
+)
+
+// CandleForStrategy 表示一根K線資料
+type CandleForStrategy struct {
+	T time.Time // T：時間
+	// O：開盤價
+	// H：最高價
+	// L：最低價
+	// C：收盤價
+	O, H, L, C decimal.Decimal
+	V          decimal.Decimal // V：成交量
+}
diff --git a/internal/lib/strategy/ring_queue.go b/internal/lib/strategy/ring_queue.go
new file mode 100644
index 0000000..b7b8a02
--- /dev/null
+++ b/internal/lib/strategy/ring_queue.go
@@ -0,0 +1,50 @@
+package strategy
+
+import (
+	"container/list"
+	"github.com/shopspring/decimal"
+)
+
+/************** 基礎的固定長度隊列，用來計算移動平均 **************/
+type ringQD struct {
+	N   int             // 窗口大小（需要保留的資料數量）
+	l   *list.List      // 用於儲存資料的雙向鏈表
+	sum decimal.Decimal // 當前窗口的總和，方便快速計算平均值
+}
+
+// 建立一個固定長度的隊列
+func newRingQD(n int) *ringQD {
+	return &ringQD{N: n, l: list.New(), sum: decimal.Zero}
+}
+
+// push：將新的數值放入隊列，並維護總和
+func (q *ringQD) push(x decimal.Decimal) {
+	q.l.PushBack(x)
+	q.sum = q.sum.Add(x)
+	// 如果超出最大長度，移除最舊的數值
+	if q.l.Len() > q.N {
+		f := q.l.Front()
+		q.sum = q.sum.Sub(f.Value.(decimal.Decimal))
+		q.l.Remove(f)
+	}
+}
+
+// ready：判斷隊列是否已經填滿
+func (q *ringQD) ready() bool { return q.l.Len() == q.N }
+
+// mean：計算平均值
+func (q *ringQD) mean() decimal.Decimal {
+	if q.l.Len() == 0 {
+		return decimal.Zero
+	}
+	return q.sum.Div(decimal.NewFromInt(int64(q.l.Len())))
+}
+
+// values：返回隊列中所有的值（複製一份，不影響原資料）
+func (q *ringQD) values() []decimal.Decimal {
+	out := make([]decimal.Decimal, 0, q.l.Len())
+	for e := q.l.Front(); e != nil; e = e.Next() {
+		out = append(out, e.Value.(decimal.Decimal))
+	}
+	return out
+}
diff --git a/internal/lib/strategy/ring_queue_test.go b/internal/lib/strategy/ring_queue_test.go
new file mode 100644
index 0000000..f1f1094
--- /dev/null
+++ b/internal/lib/strategy/ring_queue_test.go
@@ -0,0 +1,129 @@
+package strategy
+
+import (
+	"github.com/shopspring/decimal"
+	"reflect"
+	"testing"
+)
+
+// --- 表格式驅動測試 (Table-Driven Test) ---
+
+func TestRingQD(t *testing.T) {
+	// 為了方便測試，預先建立幾個 decimal 數值
+	d10 := decimal.NewFromInt(10)
+	d20 := decimal.NewFromInt(20)
+	d30 := decimal.NewFromInt(30)
+	d40 := decimal.NewFromInt(40)
+	d50 := decimal.NewFromInt(50)
+	d_neg5 := decimal.NewFromInt(-5)
+
+	// 定義測試案例的結構
+	testCases := []struct {
+		name       string            // 測試案例的名稱
+		n          int               // ringQD 的大小
+		inputs     []decimal.Decimal // 輸入的數值序列
+		wantSum    decimal.Decimal   // 預期的總和
+		wantMean   decimal.Decimal   // 預期的平均值
+		wantValues []decimal.Decimal // 預期隊列中最後的值
+		wantReady  bool              // 預期的就緒狀態
+	}{
+		{
+			name:       "未滿載的情況",
+			n:          5,
+			inputs:     []decimal.Decimal{d10, d20},
+			wantSum:    decimal.NewFromInt(30),
+			wantMean:   decimal.NewFromInt(15),
+			wantValues: []decimal.Decimal{d10, d20},
+			wantReady:  false,
+		},
+		{
+			name:       "剛好滿載的情況",
+			n:          3,
+			inputs:     []decimal.Decimal{d10, d20, d30},
+			wantSum:    decimal.NewFromInt(60),
+			wantMean:   decimal.NewFromInt(20),
+			wantValues: []decimal.Decimal{d10, d20, d30},
+			wantReady:  true,
+		},
+		{
+			name:       "超出容量，舊資料被移除",
+			n:          3,
+			inputs:     []decimal.Decimal{d10, d20, d30, d40, d50},
+			wantSum:    decimal.NewFromInt(120), // 30 + 40 + 50
+			wantMean:   decimal.NewFromInt(40),
+			wantValues: []decimal.Decimal{d30, d40, d50},
+			wantReady:  true,
+		},
+		{
+			name:       "包含零與負數",
+			n:          4,
+			inputs:     []decimal.Decimal{d10, d_neg5, decimal.Zero, d30, d_neg5},
+			wantSum:    decimal.NewFromInt(20), // -5 + 0 + 30 + (-5)
+			wantMean:   decimal.NewFromInt(5),
+			wantValues: []decimal.Decimal{d_neg5, decimal.Zero, d30, d_neg5},
+			wantReady:  true,
+		},
+		{
+			name:       "初始為空",
+			n:          5,
+			inputs:     []decimal.Decimal{},
+			wantSum:    decimal.Zero,
+			wantMean:   decimal.Zero,
+			wantValues: []decimal.Decimal{},
+			wantReady:  false,
+		},
+		{
+			name:       "N 為 1 的邊界情況",
+			n:          1,
+			inputs:     []decimal.Decimal{d10, d20, d30},
+			wantSum:    d30,
+			wantMean:   d30,
+			wantValues: []decimal.Decimal{d30},
+			wantReady:  true,
+		},
+		{
+			name:       "N 為 0 的無效情況",
+			n:          0,
+			inputs:     []decimal.Decimal{d10, d20, d30},
+			wantSum:    decimal.Zero,
+			wantMean:   decimal.Zero,
+			wantValues: []decimal.Decimal{},
+			wantReady:  true,
+		},
+	}
+
+	// 遍歷所有測試案例
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			// 針對每個案例建立一個新的 ringQD
+			q := newRingQD(tc.n)
+
+			// 依序推入資料
+			for _, val := range tc.inputs {
+				q.push(val)
+			}
+
+			// 驗證總和
+			if !q.sum.Equals(tc.wantSum) {
+				t.Errorf("Sum 錯誤：got %v, want %v", q.sum, tc.wantSum)
+			}
+
+			// 驗證平均值
+			gotMean := q.mean()
+			if !gotMean.Equals(tc.wantMean) {
+				t.Errorf("Mean 錯誤：got %v, want %v", gotMean, tc.wantMean)
+			}
+
+			// 驗證就緒狀態
+			if q.ready() != tc.wantReady {
+				t.Errorf("Ready 狀態錯誤：got %v, want %v", q.ready(), tc.wantReady)
+			}
+
+			// 驗證隊列中的值
+			gotValues := q.values()
+			if !reflect.DeepEqual(gotValues, tc.wantValues) {
+				t.Errorf("Values 錯誤：got %v, want %v", gotValues, tc.wantValues)
+			}
+		})
+	}
+}
diff --git a/internal/lib/strategy/sma.go b/internal/lib/strategy/sma.go
new file mode 100644
index 0000000..9aafdbb
--- /dev/null
+++ b/internal/lib/strategy/sma.go
@@ -0,0 +1,45 @@
+package strategy
+
+import "github.com/shopspring/decimal"
+
+/* SMA (Simple Moving Average) 簡單移動平均線。 它透過計算一段時間內股價的平均值，來判斷趨勢和提供交易信號。
+
+SMA 的計算方式：
+	SMA 簡單地將一段時間內的收盤價加總，再除以該期間的交易日數。 例如，5 日SMA 就是將過去 5 個交易日的收盤價加總後除以 5。
+SMA 的應用：
+	1. 趨勢判斷:
+		SMA 可以用來判斷價格的趨勢。 當股價在 SMA 上方，且 SMA 向上移動時，表示股價處於上升趨勢；
+		反之，當股價在 SMA 下方，且SMA 向下移動時，表示股價處於下降趨勢。
+	2. 支撐與阻力:
+		SMA 也可以被視為支撐位和阻力位。 當股價下跌到SMA 附近時，SMA 可能會提供支撐；而當股價上漲到SMA 附近時，SMA 可能會提供阻力。
+	3. 交易信號:
+		移動平均線的交叉也可以產生交易信號。 例如，當短期SMA 線向上穿越長期SMA 線時，被稱為黃金交叉，可能是一個買入信號；
+		反之，當短期SMA 線向下穿越長期SMA 線時，被稱為死亡交叉，可能是一個賣出信號。
+SMA 的優缺點:
+	優點: SMA 計算簡單、易於理解，適合新手使用。
+	缺點: SMA 對於價格變動的反應較為遲鈍，可能會落後於市場，特別是短期波動時，可能不如其他移動平均線指標準確。
+*/
+
+type SMA struct {
+	q *ringQD
+}
+
+// NewSMA 建立SMA計算器
+func NewSMA(n int) *SMA { return &SMA{q: newRingQD(n)} }
+
+// Push 輸入收盤價，返回當前SMA值
+func (s *SMA) Push(close decimal.Decimal) (decimal.Decimal, bool) {
+	s.q.push(close)
+	if !s.q.ready() {
+		return decimal.Zero, false // 尚未湊滿資料
+	}
+	return s.q.mean(), true
+}
+
+// GetSMA 取得目前 SMA 值
+func (s *SMA) GetSMA() (decimal.Decimal, bool) {
+	if !s.q.ready() {
+		return decimal.Zero, false // 尚未湊滿資料
+	}
+	return s.q.mean(), true
+}
diff --git a/internal/logic/blockchainservice/get_history_kline_data_logic.go b/internal/logic/blockchainservice/get_history_kline_data_logic.go
new file mode 100644
index 0000000..f158fd0
--- /dev/null
+++ b/internal/logic/blockchainservice/get_history_kline_data_logic.go
@@ -0,0 +1,42 @@
+package blockchainservicelogic
+
+import (
+	"blockchain/internal/domain/usecase"
+	"context"
+	"time"
+
+	"blockchain/gen_result/pb/code.30cm.net/digimon/app-cloudep-blockchain"
+	"blockchain/internal/svc"
+
+	"github.com/zeromicro/go-zero/core/logx"
+)
+
+type GetHistoryKlineDataLogic struct {
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+	logx.Logger
+}
+
+func NewGetHistoryKlineDataLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetHistoryKlineDataLogic {
+	return &GetHistoryKlineDataLogic{
+		ctx:    ctx,
+		svcCtx: svcCtx,
+		Logger: logx.WithContext(ctx),
+	}
+}
+
+func (l *GetHistoryKlineDataLogic) GetHistoryKlineData(in *app_cloudep_blockchain.HistoryReq) (*app_cloudep_blockchain.OKResp, error) {
+	go func() {
+		st, _ := time.Parse(time.RFC3339, in.GetStartTime())
+		et, _ := time.Parse(time.RFC3339, in.GetEndTime())
+		_ = l.svcCtx.BinanceDataSource.UpsertKline(context.Background(), usecase.QueryKline{
+			Symbol:    in.GetSymbol(),
+			Interval:  in.GetInterval(),
+			StartTime: st.UnixNano(),
+			EndTime:   et.UnixNano(),
+		})
+		return
+	}()
+
+	return &app_cloudep_blockchain.OKResp{}, nil
+}
diff --git a/internal/logic/blockchainservice/ping_logic.go b/internal/logic/blockchainservice/ping_logic.go
index 27dbe49..35abdfa 100644
--- a/internal/logic/blockchainservice/ping_logic.go
+++ b/internal/logic/blockchainservice/ping_logic.go
@@ -1,12 +1,11 @@
 package blockchainservicelogic
 
 import (
-	"blockchain/internal/domain/usecase"
-	"context"
-	"time"
-
 	app_cloudep_blockchain "blockchain/gen_result/pb/code.30cm.net/digimon/app-cloudep-blockchain"
+	"blockchain/internal/domain/usecase"
 	"blockchain/internal/svc"
+	"context"
+	"fmt"
 
 	"github.com/zeromicro/go-zero/core/logx"
 )
@@ -26,11 +25,12 @@ func NewPingLogic(ctx context.Context, svcCtx *svc.ServiceContext) *PingLogic {
 }
 
 func (l *PingLogic) Ping(_ *app_cloudep_blockchain.NoneReq) (*app_cloudep_blockchain.OKResp, error) {
-	err := l.svcCtx.BinanceDataSource.UpsertKline(l.ctx, usecase.QueryKline{
-		Symbol:        "BTCUSDT",
-		Interval:      "1m",
-		StartUnixNano: time.Date(2024, 8, 1, 0, 0, 0, 0, time.UTC).UnixNano(),
-		EndUnixNano:   time.Date(2025, 8, 2, 0, 0, 0, 0, time.UTC).UnixNano(),
+
+	kline, err := l.svcCtx.BinanceDataSource.ListKline(l.ctx, usecase.QueryKline{
+		Symbol:    "ETHUSDT",
+		Interval:  "1d",
+		StartTime: 1502928000000,
+		EndTime:   1503964800000,
 	})
 	if err != nil {
 		return nil, err
diff --git a/internal/repository/data_source_binance.go b/internal/repository/data_source_binance.go
index bca47bf..c1724e3 100644
--- a/internal/repository/data_source_binance.go
+++ b/internal/repository/data_source_binance.go
@@ -12,6 +12,7 @@ import (
 	"encoding/csv"
 	"fmt"
 	"github.com/goccy/go-json"
+	"github.com/scylladb/gocqlx/v3/qb"
 	"io"
 	"net/http"
 	"os"
@@ -140,38 +141,24 @@ func (repo *BinanceRepository) GetSymbols(ctx context.Context) ([]*entity.Symbol
 }
 
 func (repo *BinanceRepository) FetchHistoryKline(ctx context.Context, param repository.QueryKline) ([]*entity.Kline, error) {
-	ch := make(chan []*entity.Kline, repo.workerSize)
-	var wg sync.WaitGroup
+	start := time.Unix(0, param.StartTime)
+	end := time.Unix(0, param.EndTime)
+
+	var allKLines []*entity.Kline
 
-	start := time.Unix(0, param.StartUnixNano)
-	end := time.Unix(0, param.EndUnixNano)
 	// 產生所有天的任務
 	for d := start; !d.After(end); d = d.AddDate(0, 0, 1) {
 		day := d
-		wg.Add(1)
-		_ = repo.workers.Submit(func() {
-			defer wg.Done()
-			klines, err := repo.fetchHistoryKline(ctx, param.Symbol, param.Interval, day.Format(time.DateOnly))
-			if err == nil && len(klines) > 0 {
-				ch <- klines // 只要拿到資料就丟進 channel
-			}
-			// 沒資料不用丟，避免 nil append
-		})
+		a, err := repo.fetchHistoryKline(ctx, param.Symbol, param.Interval, day.Format(time.DateOnly))
+		if err != nil {
+			logx.Errorf("failed to get history of kline : %v", err)
+
+			continue
+		}
+		allKLines = append(allKLines, a...)
 	}
 
-	// 等全部任務完成再關閉 channel
-	go func() {
-		wg.Wait()
-		close(ch)
-	}()
-
-	// 收集所有 K 線
-	var allKlines []*entity.Kline
-	for klines := range ch {
-		allKlines = append(allKlines, klines...)
-	}
-
-	return allKlines, nil
+	return allKLines, nil
 }
 
 func (repo *BinanceRepository) SaveHistoryKline(ctx context.Context, data []*entity.Kline) error {
@@ -187,7 +174,6 @@ func (repo *BinanceRepository) SaveHistoryKline(ctx context.Context, data []*ent
 		go func(k *entity.Kline) {
 			defer wg.Done()
 			defer func() { <-ch }()
-
 			if err := repo.db.Insert(ctx, k, repo.KeySpace); err != nil {
 				mu.Lock()
 				errList = append(errList, err)
@@ -206,6 +192,35 @@ func (repo *BinanceRepository) SaveHistoryKline(ctx context.Context, data []*ent
 	return nil
 }
 
+func (repo *BinanceRepository) GetKline(ctx context.Context, param repository.QueryKline) ([]entity.Kline, error) {
+	e := entity.Kline{}
+	stmt, names := qb.Select(fmt.Sprintf("%s.%s", repo.KeySpace, e.TableName())).
+		Columns(
+			"symbol", "interval", "open_time", "open", "high", "low", "close",
+			"volume", "close_time", "quote_asset_volume", "number_of_trades",
+			"taker_buy_base_asset_volume", "taker_buy_quote_asset_volume",
+		).
+		Where(
+			qb.Eq("symbol"),
+			qb.Eq("interval"),
+			qb.GtOrEqNamed("open_time", "start"),
+			qb.LtOrEqNamed("open_time", "end"),
+		).ToCql()
+
+	var result []entity.Kline
+	err := repo.db.GetSession().Query(stmt, names).BindMap(qb.M{
+		"symbol":   param.Symbol,
+		"interval": param.Interval,
+		"start":    param.StartTime,
+		"end":      param.EndTime,
+	}).SelectRelease(&result)
+	if err != nil {
+		return nil, err
+	}
+
+	return result, nil
+}
+
 // =============
 func (repo *BinanceRepository) getSymbolsFromSource(ctx context.Context) ([]binance.Symbol, error) {
 	if repo.Client == nil {
@@ -229,11 +244,7 @@ func (repo *BinanceRepository) fetchHistoryKline(ctx context.Context, symbol str
 	if err := check(ctx, url); err != nil {
 		return nil, err
 	}
-	// 這個 URL 只可能指向 binance.vision 官方站，已限定字串組合，不可能被用戶控制。
-	// #nosec G107
-	// 下載 zip
-	// 這個 URL 只可能指向 binance.vision 官方站，已限定字串組合，不可能被用戶控制。
-	// #nosec G107
+
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
 		return nil, err
@@ -274,7 +285,6 @@ func (repo *BinanceRepository) fetchHistoryKline(ctx context.Context, symbol str
 		"quote_asset_volume", "number_of_trades", "taker_buy_base_asset_volume",
 		"taker_buy_quote_asset_volume", "ignore",
 	}
-
 	for _, f := range r.File {
 		rc, err := f.Open()
 		if err != nil {
@@ -293,11 +303,11 @@ func (repo *BinanceRepository) fetchHistoryKline(ctx context.Context, symbol str
 			if err != nil || len(record) < 12 {
 				continue
 			}
+			logx.Infof("record: %s", record)
 			_ = writer.Write(record)
 		}
 		writer.Flush()
 		rc.Close()
-
 		// csvutil parse
 		var klines []*entity.Kline
 		if err := csvutil.Unmarshal(buf.Bytes(), &klines); err != nil {
diff --git a/internal/repository/data_source_binance_test.go b/internal/repository/data_source_binance_test.go
index a4eb74f..25dc106 100644
--- a/internal/repository/data_source_binance_test.go
+++ b/internal/repository/data_source_binance_test.go
@@ -100,10 +100,10 @@ func TestSymbol(t *testing.T) {
 	})
 
 	k, err := repo.FetchHistoryKline(context.Background(), repository.QueryKline{
-		Symbol:        "BTCUSDT",
-		Interval:      "1m",
-		StartUnixNano: time.Date(2025, 8, 3, 0, 0, 0, 0, time.UTC).UnixNano(),
-		EndUnixNano:   time.Date(2025, 8, 4, 0, 0, 0, 0, time.UTC).UnixNano(),
+		Symbol:    "BTCUSDT",
+		Interval:  "1m",
+		StartTime: time.Date(2025, 8, 3, 0, 0, 0, 0, time.UTC).UnixNano(),
+		EndTime:   time.Date(2025, 8, 4, 0, 0, 0, 0, time.UTC).UnixNano(),
 	})
 	assert.NoError(t, err)
 	for _, item := range k {
diff --git a/internal/server/blockchainservice/blockchain_service_server.go b/internal/server/blockchainservice/blockchain_service_server.go
index 5ea0248..18536d8 100644
--- a/internal/server/blockchainservice/blockchain_service_server.go
+++ b/internal/server/blockchainservice/blockchain_service_server.go
@@ -1,5 +1,5 @@
 // Code generated by goctl. DO NOT EDIT.
-// goctl 1.8.5
+// goctl 1.8.1
 // Source: blockchain.proto
 
 package server
@@ -7,8 +7,8 @@ package server
 import (
 	"context"
 
-	app_cloudep_blockchain "blockchain/gen_result/pb/code.30cm.net/digimon/app-cloudep-blockchain"
-	blockchainservicelogic "blockchain/internal/logic/blockchainservice"
+	"blockchain/gen_result/pb/code.30cm.net/digimon/app-cloudep-blockchain"
+	"blockchain/internal/logic/blockchainservice"
 	"blockchain/internal/svc"
 )
 
@@ -29,6 +29,11 @@ func (s *BlockchainServiceServer) ListSymbols(ctx context.Context, in *app_cloud
 	return l.ListSymbols(in)
 }
 
+func (s *BlockchainServiceServer) GetHistoryKlineData(ctx context.Context, in *app_cloudep_blockchain.HistoryReq) (*app_cloudep_blockchain.OKResp, error) {
+	l := blockchainservicelogic.NewGetHistoryKlineDataLogic(ctx, s.svcCtx)
+	return l.GetHistoryKlineData(in)
+}
+
 // Ping is a health-check endpoint.
 func (s *BlockchainServiceServer) Ping(ctx context.Context, in *app_cloudep_blockchain.NoneReq) (*app_cloudep_blockchain.OKResp, error) {
 	l := blockchainservicelogic.NewPingLogic(ctx, s.svcCtx)
diff --git a/internal/svc/service_context.go b/internal/svc/service_context.go
index 19d9233..21a90f9 100644
--- a/internal/svc/service_context.go
+++ b/internal/svc/service_context.go
@@ -32,7 +32,7 @@ func NewServiceContext(c config.Config) *ServiceContext {
 		DB:       cassandra,
 		KeySpace: c.Cassandra.Keyspace,
 	})
-	InitBinanceKLineWebsocket()
+	// InitBinanceKLineWebsocket()
 	return &ServiceContext{
 		Config:      c,
 		BinanceRepo: binanceRepo,
diff --git a/internal/usecase/binance.go b/internal/usecase/binance.go
index 1cdea0b..e49ab2c 100644
--- a/internal/usecase/binance.go
+++ b/internal/usecase/binance.go
@@ -4,9 +4,8 @@ import (
 	"blockchain/internal/domain/blockchain"
 	"blockchain/internal/domain/repository"
 	"blockchain/internal/domain/usecase"
-	"context"
-
 	"code.30cm.net/digimon/library-go/errs"
+	"context"
 	"github.com/zeromicro/go-zero/core/logx"
 )
 
@@ -58,10 +57,10 @@ func (use *BinanceUseCase) GetSymbols(ctx context.Context) ([]*usecase.Symbol, e
 
 func (use *BinanceUseCase) UpsertKline(ctx context.Context, data usecase.QueryKline) error {
 	origianData, err := use.BinanceRepo.FetchHistoryKline(ctx, repository.QueryKline{
-		Symbol:        data.Symbol,
-		Interval:      data.Interval,
-		StartUnixNano: data.StartUnixNano,
-		EndUnixNano:   data.EndUnixNano,
+		Symbol:    data.Symbol,
+		Interval:  data.Interval,
+		StartTime: data.StartTime,
+		EndTime:   data.EndTime,
 	})
 	if err != nil {
 		e := errs.ThirdPartyErrorL(
@@ -94,3 +93,47 @@ func (use *BinanceUseCase) UpsertKline(ctx context.Context, data usecase.QueryKl
 
 	return nil
 }
+
+func (use *BinanceUseCase) ListKline(ctx context.Context, param usecase.QueryKline) ([]usecase.Candle, error) {
+	kline, err := use.BinanceRepo.GetKline(ctx, repository.QueryKline{
+		Symbol:    param.Symbol,
+		Interval:  param.Interval,
+		StartTime: param.StartTime,
+		EndTime:   param.EndTime,
+	})
+
+	if err != nil {
+		e := errs.DatabaseErrorWithScopeL(
+			blockchain.CodeBlockchain,
+			blockchain.FailedToListBinanceKlineErrorCode,
+			logx.WithContext(ctx),
+			[]logx.LogField{
+				{Key: "func", Value: "BinanceRepo.GetKline"},
+				{Key: "err", Value: err.Error()},
+			},
+			"failed get kline data from db").Wrap(err)
+
+		return nil, e
+	}
+
+	candle := make([]usecase.Candle, 0, len(kline))
+	for _, item := range kline {
+		candle = append(candle, usecase.Candle{
+			OpenTime:                 item.OpenTime,
+			Open:                     item.Open,
+			High:                     item.High,
+			Low:                      item.Low,
+			Close:                    item.Close,
+			Volume:                   item.Volume,
+			CloseTime:                item.CloseTime,
+			QuoteAssetVolume:         item.QuoteAssetVolume,
+			NumberOfTrades:           item.NumberOfTrades,
+			TakerBuyBaseAssetVolume:  item.TakerBuyBaseAssetVolume,
+			TakerBuyQuoteAssetVolume: item.TakerBuyQuoteAssetVolume,
+			Symbol:                   item.Symbol,
+			Interval:                 item.Interval,
+		})
+	}
+
+	return candle, nil
+}