diff --git a/generate/protobuf/trade.proto b/generate/protobuf/trade.proto
index 7f90723..473009f 100644
--- a/generate/protobuf/trade.proto
+++ b/generate/protobuf/trade.proto
@@ -203,6 +203,8 @@ message UnavailableBalance{
   string unconfirmed = 2; // 限制餘額
 }
 
+// TODO 未來會新增查詢以及同步的功能
+
 service WalletService {
   // CreateWallet 建立錢包
   rpc CreateWallet(CreateWalletReq) returns (OKResp);
@@ -228,14 +230,122 @@ service WalletService {
   rpc QueryBalance(QueryBalanceByDateReq) returns (QueryBalanceByDateResp);
 }
 
-
-  // 餘額查詢-> 依照日期
-  // 查詢目前所擁有的資產
-  // 依照日期查詢提現金額
-
 // ========== 庫存服務 ===========
-service InventoryService {}
+
+message StockAdjustmentReq {
+  string product_id = 1; // 商品ID
+  int64 quantity = 2; // 調整的數量 (正數表示增加，負數表示減少)
+}
+
+message StockQueryReq {
+  string product_id = 1; // 商品ID
+}
+
+message StockResp {
+  string product_id = 1; // 商品ID
+  int64 available_quantity = 2; // 可用庫存
+  int64 reserved_quantity = 3; // 預留庫存
+}
+
+message StockListResp {
+  repeated StockResp stock_items = 1; // 所有商品的庫存清單
+  Pager page =2;
+}
+
+message StockReservationReq {
+  string product_id = 1; // 商品ID
+  int64 quantity = 2; // 預留的數量
+}
+
+message BatchStockAdjustmentReq {
+  repeated StockAdjustmentReq adjustments = 1; // 批次調整庫存
+}
+
+
+service InventoryService {
+  // AddStock 增加庫存
+  rpc AddStock(StockAdjustmentReq) returns (OKResp);
+  // ReduceStock 減少庫存
+  rpc ReduceStock(StockAdjustmentReq) returns (OKResp);
+  // QueryStock 查詢單一商品的庫存
+  rpc QueryStock(StockQueryReq) returns (StockResp);
+  // ListAllStock 查詢所有商品的庫存狀況
+  rpc ListAllStock(NoneReq) returns (StockListResp);
+  // ReserveStock 預留庫存 (用於未完成的訂單)
+  rpc ReserveStock(StockReservationReq) returns (OKResp);
+  // ReleaseReservedStock 釋放預留庫存 (取消或失效的訂單)
+  rpc ReleaseReservedStock(StockReservationReq) returns (OKResp);
+  // AdjustStock 調整庫存 (批量修改庫存，用於大批商品更新)
+  rpc AdjustStock(BatchStockAdjustmentReq) returns (OKResp);
+}
+
 // ========== 商品服務 ===========
 service ProductService {}
 // ========== 訂閱服務 ===========
-service SubscriptionService {}
\ No newline at end of file
+
+// 訂閱請求和回應訊息
+message SubscriptionCreateReq {
+  string user_id = 1; // 使用者ID
+  string plan_id = 2; // 訂閱方案ID
+  string start_date = 3; // 訂閱開始日期
+}
+
+message SubscriptionUpdateReq {
+  string subscription_id = 1; // 訂閱ID
+  string plan_id = 2; // 訂閱方案ID
+}
+
+message SubscriptionCancelReq {
+  string subscription_id = 1; // 訂閱ID
+}
+
+message SubscriptionQueryReq {
+  string subscription_id = 1; // 訂閱ID
+}
+
+message SubscriptionResp {
+  string subscription_id = 1; // 訂閱ID
+  string user_id = 2; // 使用者ID
+  string plan_id = 3; // 訂閱方案ID
+  string start_date = 4; // 訂閱開始日期
+  string end_date = 5; // 訂閱結束日期
+  string status = 6; // 訂閱狀態 (例如: "active", "expired", "canceled")
+}
+
+message SubscriptionListResp {
+  repeated SubscriptionResp subscriptions = 1; // 訂閱清單
+}
+
+message SubscriptionRenewReq {
+  string subscription_id = 1; // 訂閱ID
+  string renewal_date = 2; // 續訂日期
+}
+
+message SubscriptionStatusQueryReq {
+  string subscription_id = 1; // 訂閱ID
+}
+
+message SubscriptionStatusResp {
+  string subscription_id = 1; // 訂閱ID
+  string status = 2; // 訂閱狀態
+  string message = 3; // 狀態訊息
+}
+
+service SubscriptionService {
+  // CreateSubscription 建立訂閱
+  rpc CreateSubscription(SubscriptionCreateReq) returns (SubscriptionResp);
+  // UpdateSubscription 更新訂閱設定
+  rpc UpdateSubscription(SubscriptionUpdateReq) returns (SubscriptionResp);
+  // CancelSubscription 取消訂閱
+  rpc CancelSubscription(SubscriptionCancelReq) returns (OKResp);
+  // QuerySubscription 查詢單一訂閱資訊
+  rpc QuerySubscription(SubscriptionQueryReq) returns (SubscriptionResp);
+  // ListSubscriptions 查詢所有訂閱 (用於管理和監控)
+  rpc ListSubscriptions(NoneReq) returns (SubscriptionListResp);
+  // RenewSubscription 續訂訂閱
+  rpc RenewSubscription(SubscriptionRenewReq) returns (SubscriptionResp);
+  // CheckSubscriptionStatus 查詢訂閱狀態 (啟用/過期/取消)
+  rpc CheckSubscriptionStatus(SubscriptionStatusQueryReq) returns (SubscriptionStatusResp);
+  // RefreshSubscriptionStatus cron 改變訂閱的狀態（時間到了要過期），每 5 分鐘執行一次
+  rpc RefreshSubscriptionStatus(NoneReq) returns (OKResp);
+}
\ No newline at end of file