diff --git a/go.work b/go.work
index d9fccaf..90a2422 100644
--- a/go.work
+++ b/go.work
@@ -4,4 +4,5 @@ use (
 	./errors
 	./validator
 	./worker_pool
+	./jwt
 )
diff --git a/jwt/claims.go b/jwt/claims.go
new file mode 100644
index 0000000..d4a7a62
--- /dev/null
+++ b/jwt/claims.go
@@ -0,0 +1,68 @@
+package jwt
+
+type DataClaims map[string]string
+
+const (
+	idCode       = "id"
+	roleCode     = "role"
+	deviceIDCode = "device_id"
+	scopeCode    = "scope"
+	uidCode      = "uid"
+)
+
+// ============ 使用具體的 setter ============
+
+// Set 通用的 setter 方法
+func (c DataClaims) Set(key, value string) {
+	c[key] = value
+}
+
+func (c DataClaims) SetID(id string) {
+	c.Set(idCode, id)
+}
+
+func (c DataClaims) SetRole(role string) {
+	c.Set(roleCode, role)
+}
+
+func (c DataClaims) SetDeviceID(deviceID string) {
+	c.Set(deviceIDCode, deviceID)
+}
+
+func (c DataClaims) SetScope(scope string) {
+	c.Set(scopeCode, scope)
+}
+
+func (c DataClaims) SetUID(uid string) {
+	c.Set(uidCode, uid)
+}
+
+// ============ 使用具體的 getter ============
+
+func (c DataClaims) Get(key string) string {
+	if val, ok := c[key]; ok {
+		return val
+	}
+
+	return ""
+}
+
+func (c DataClaims) Scope() {
+	c.Get(scopeCode)
+}
+
+func (c DataClaims) Role() string {
+	return c.Get(roleCode)
+}
+
+func (c DataClaims) ID() string {
+	return c.Get(idCode)
+}
+
+func (c DataClaims) DeviceID() string {
+	return c.Get(deviceIDCode)
+}
+
+func (c DataClaims) UID() string {
+	return c.Get(uidCode)
+}
diff --git a/jwt/claims_test.go b/jwt/claims_test.go
new file mode 100644
index 0000000..260b8c6
--- /dev/null
+++ b/jwt/claims_test.go
@@ -0,0 +1,72 @@
+package jwt
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestDataClaimsSettersAndGetters(t *testing.T) {
+	tests := []struct {
+		name        string
+		setterFunc  func(c DataClaims, value string)
+		getterFunc  func(c DataClaims) string
+		value       string
+		expectedVal string
+	}{
+		{
+			name:        "Set and Get ID",
+			setterFunc:  func(c DataClaims, value string) { c.SetID(value) },
+			getterFunc:  func(c DataClaims) string { return c.ID() },
+			value:       "12345",
+			expectedVal: "12345",
+		},
+		{
+			name:        "Set and Get Role",
+			setterFunc:  func(c DataClaims, value string) { c.SetRole(value) },
+			getterFunc:  func(c DataClaims) string { return c.Role() },
+			value:       "admin",
+			expectedVal: "admin",
+		},
+		{
+			name:        "Set and Get Device ID",
+			setterFunc:  func(c DataClaims, value string) { c.SetDeviceID(value) },
+			getterFunc:  func(c DataClaims) string { return c.DeviceID() },
+			value:       "device123",
+			expectedVal: "device123",
+		},
+		{
+			name:        "Set and Get Scope",
+			setterFunc:  func(c DataClaims, value string) { c.SetScope(value) },
+			getterFunc:  func(c DataClaims) string { return c.Get(scopeCode) },
+			value:       "read",
+			expectedVal: "read",
+		},
+		{
+			name:        "Set and Get UID",
+			setterFunc:  func(c DataClaims, value string) { c.SetUID(value) },
+			getterFunc:  func(c DataClaims) string { return c.UID() },
+			value:       "user123",
+			expectedVal: "user123",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			claims := DataClaims{}
+
+			// Call the setter function
+			tt.setterFunc(claims, tt.value)
+
+			// Call the getter function and verify the result
+			require.Equal(t, tt.expectedVal, tt.getterFunc(claims), "Expected value does not match")
+		})
+	}
+}
+
+func TestDataClaimsGetNonExistentKey(t *testing.T) {
+	claims := DataClaims{}
+
+	// 對於不存在的鍵，應返回空字串
+	require.Equal(t, "", claims.Get("nonexistent_key"), "Should return empty string for non-existent key")
+}
diff --git a/jwt/define.go b/jwt/define.go
new file mode 100644
index 0000000..f8cf828
--- /dev/null
+++ b/jwt/define.go
@@ -0,0 +1,52 @@
+package jwt
+
+import (
+	"time"
+
+	"github.com/golang-jwt/jwt/v4"
+)
+
+type Token struct {
+	ID               string    `json:"id"`
+	UID              string    `json:"uid"`
+	DeviceID         string    `json:"device_id"`
+	AccessToken      string    `json:"access_token"`
+	ExpiresIn        int       `json:"expires_in"`
+	AccessCreateAt   time.Time `json:"access_create_at"`
+	RefreshToken     string    `json:"refresh_token"`
+	RefreshExpiresIn int       `json:"refresh_expires_in"`
+	RefreshCreateAt  time.Time `json:"refresh_create_at"`
+}
+
+func (t *Token) AccessTokenExpires() time.Duration {
+	return time.Duration(t.ExpiresIn) * time.Second
+}
+
+func (t *Token) RefreshTokenExpires() time.Duration {
+	return time.Duration(t.RefreshExpiresIn) * time.Second
+}
+
+func (t *Token) RefreshTokenExpiresUnix() int64 {
+	return time.Now().Add(t.RefreshTokenExpires()).Unix()
+}
+
+func (t *Token) IsExpires() bool {
+	return t.AccessCreateAt.Add(t.AccessTokenExpires()).Before(time.Now())
+}
+
+func (t *Token) RedisExpiredSec() int64 {
+	sec := time.Unix(int64(t.ExpiresIn), 0).Sub(time.Now().UTC())
+
+	return int64(sec.Seconds())
+}
+
+func (t *Token) RedisRefreshExpiredSec() int64 {
+	sec := time.Unix(int64(t.RefreshExpiresIn), 0).Sub(time.Now().UTC())
+
+	return int64(sec.Seconds())
+}
+
+type Claims struct {
+	jwt.RegisteredClaims
+	Data interface{} `json:"data"`
+}
diff --git a/jwt/define_test.go b/jwt/define_test.go
new file mode 100644
index 0000000..2496e64
--- /dev/null
+++ b/jwt/define_test.go
@@ -0,0 +1,82 @@
+package jwt
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestAccessTokenExpires(t *testing.T) {
+	token := &Token{
+		ExpiresIn: 3600, // 1小時
+	}
+
+	expectedDuration := time.Hour
+	actualDuration := token.AccessTokenExpires()
+
+	require.Equal(t, expectedDuration, actualDuration, "Access token expiration duration should be 1 hour")
+}
+
+func TestRefreshTokenExpires(t *testing.T) {
+	token := &Token{
+		RefreshExpiresIn: 7200, // 2小時
+	}
+
+	expectedDuration := 2 * time.Hour
+	actualDuration := token.RefreshTokenExpires()
+
+	require.Equal(t, expectedDuration, actualDuration, "Refresh token expiration duration should be 2 hours")
+}
+
+func TestRefreshTokenExpiresUnix(t *testing.T) {
+	token := &Token{
+		RefreshExpiresIn: 3600, // 1小時
+	}
+
+	expectedUnix := time.Now().Add(1 * time.Hour).Unix()
+	actualUnix := token.RefreshTokenExpiresUnix()
+
+	// 設定允許範圍，確保結果在1秒的範圍內
+	require.InEpsilon(t, expectedUnix, actualUnix, 1, "Refresh token expires Unix time should match the expected time")
+}
+
+func TestIsExpires(t *testing.T) {
+	// 測試過期情況
+	tokenExpired := &Token{
+		ExpiresIn:      3600,                           // 1小時
+		AccessCreateAt: time.Now().Add(-2 * time.Hour), // 2小時前生成的 token，應該過期
+	}
+	require.True(t, tokenExpired.IsExpires(), "Token should be expired")
+
+	// 測試未過期情況
+	tokenNotExpired := &Token{
+		ExpiresIn:      3600,                              // 1小時
+		AccessCreateAt: time.Now().Add(-30 * time.Minute), // 30分鐘前生成的 token，應該未過期
+	}
+	require.False(t, tokenNotExpired.IsExpires(), "Token should not be expired")
+}
+
+func TestRedisExpiredSec(t *testing.T) {
+	token := &Token{
+		ExpiresIn: int(time.Now().Add(1 * time.Hour).Unix()), // 1小時後過期
+	}
+
+	expectedSec := int64(3600) // 1小時
+	actualSec := token.RedisExpiredSec()
+
+	// 確保時間在合理範圍內
+	require.InDelta(t, expectedSec, actualSec, 1, "Redis expired seconds should be close to 3600 seconds")
+}
+
+func TestRedisRefreshExpiredSec(t *testing.T) {
+	token := &Token{
+		RefreshExpiresIn: int(time.Now().Add(2 * time.Hour).Unix()), // 2小時後過期
+	}
+
+	expectedSec := int64(7200) // 2小時
+	actualSec := token.RedisRefreshExpiredSec()
+
+	// 確保時間在合理範圍內
+	require.InDelta(t, expectedSec, actualSec, 1, "Redis refresh expired seconds should be close to 7200 seconds")
+}
diff --git a/jwt/go.mod b/jwt/go.mod
new file mode 100644
index 0000000..c2a705a
--- /dev/null
+++ b/jwt/go.mod
@@ -0,0 +1,14 @@
+module code.30cm.net/digimon/library-go/jwt
+
+go 1.22.3
+
+require (
+	github.com/golang-jwt/jwt/v4 v4.5.0
+	github.com/stretchr/testify v1.9.0
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)
diff --git a/jwt/token.go b/jwt/token.go
new file mode 100644
index 0000000..a58e6fe
--- /dev/null
+++ b/jwt/token.go
@@ -0,0 +1,91 @@
+package jwt
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/golang-jwt/jwt/v4"
+)
+
+func GenerateAccessToken(token Token, data any, sign string, issuer string) (string, error) {
+	claim := Claims{
+		Data: data,
+		RegisteredClaims: jwt.RegisteredClaims{
+			ID:        token.ID,
+			ExpiresAt: jwt.NewNumericDate(time.Unix(int64(token.ExpiresIn), 0)),
+			Issuer:    issuer,
+		},
+	}
+
+	accessToken, err := jwt.NewWithClaims(jwt.SigningMethodHS256, claim).
+		SignedString([]byte(sign))
+	if err != nil {
+		return "", err
+	}
+
+	return accessToken, nil
+}
+
+func ParseToken(accessToken string, secret string, validate bool) (jwt.MapClaims, error) {
+	// 跳過驗證的解析
+	var token *jwt.Token
+	var err error
+
+	if validate {
+		token, err = jwt.Parse(accessToken, func(token *jwt.Token) (interface{}, error) {
+			if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
+				return nil, fmt.Errorf("token unexpected signing method: %v", token.Header["alg"])
+			}
+
+			return []byte(secret), nil
+		})
+		if err != nil {
+			return jwt.MapClaims{}, err
+		}
+	} else {
+		parser := jwt.NewParser(jwt.WithoutClaimsValidation())
+		token, err = parser.Parse(accessToken, func(_ *jwt.Token) (interface{}, error) {
+			return []byte(secret), nil
+		})
+		if err != nil {
+			return jwt.MapClaims{}, err
+		}
+	}
+
+	claims, ok := token.Claims.(jwt.MapClaims)
+	if !ok && token.Valid {
+		return jwt.MapClaims{}, fmt.Errorf("token valid error")
+	}
+
+	return claims, nil
+}
+
+func ParseClaims(accessToken string, secret string, validate bool) (DataClaims, error) {
+	claimMap, err := ParseToken(accessToken, secret, validate)
+	if err != nil {
+		return DataClaims{}, err
+	}
+
+	claimsData, ok := claimMap["data"].(map[string]any)
+	if ok {
+		return convertMap(claimsData), nil
+	}
+
+	return DataClaims{}, fmt.Errorf("get data from claim map error")
+}
+
+func convertMap(input map[string]interface{}) map[string]string {
+	output := make(map[string]string)
+	for key, value := range input {
+		switch v := value.(type) {
+		case string:
+			output[key] = v
+		case fmt.Stringer:
+			output[key] = v.String()
+		default:
+			output[key] = fmt.Sprintf("%v", value)
+		}
+	}
+
+	return output
+}
diff --git a/jwt/token_test.go b/jwt/token_test.go
new file mode 100644
index 0000000..aeea248
--- /dev/null
+++ b/jwt/token_test.go
@@ -0,0 +1,87 @@
+package jwt
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestGenerateAccessToken(t *testing.T) {
+	// 定義測試參數
+	token := Token{
+		ID:        "12345",
+		ExpiresIn: int(time.Now().Add(1 * time.Hour).Unix()),
+	}
+	sign := "secret_sign"
+	data := map[string]string{
+		"role": "admin",
+		"uid":  "user123",
+	}
+	issuer := "test_issuer"
+
+	// 調用生成 access token
+	accessToken, err := GenerateAccessToken(token, data, sign, issuer)
+	require.NoError(t, err)
+	require.NotEmpty(t, accessToken)
+
+	// 檢查 access token 是否可以解析
+	claims, err := ParseToken(accessToken, sign, true)
+	require.NoError(t, err)
+
+	// 驗證 Claims 是否正確
+	require.Equal(t, token.ID, claims["jti"])
+	require.Equal(t, issuer, claims["iss"])
+	require.Equal(t, "admin", claims["data"].(map[string]interface{})["role"])
+	require.Equal(t, "user123", claims["data"].(map[string]interface{})["uid"])
+}
+
+func TestParseToken(t *testing.T) {
+	// 測試生成並解析 token
+	token := Token{
+		ID:        "67890",
+		ExpiresIn: int(time.Now().Add(2 * time.Hour).Unix()),
+	}
+	sign := "another_secret_sign"
+	data := map[string]string{
+		"role": "user",
+		"uid":  "user456",
+	}
+
+	accessToken, err := GenerateAccessToken(token, data, sign, "example_issuer")
+	require.NoError(t, err)
+	require.NotEmpty(t, accessToken)
+
+	// 測試有驗證的解析
+	claims, err := ParseToken(accessToken, sign, true)
+	require.NoError(t, err)
+	require.Equal(t, "user", claims["data"].(map[string]interface{})["role"])
+	require.Equal(t, "user456", claims["data"].(map[string]interface{})["uid"])
+
+	// 測試不驗證的解析
+	claimsNoValidation, err := ParseToken(accessToken, sign, false)
+	require.NoError(t, err)
+	require.Equal(t, "user", claimsNoValidation["data"].(map[string]interface{})["role"])
+}
+
+func TestParseClaims(t *testing.T) {
+	// 測試生成並解析 claims
+	token := Token{
+		ID:        "54321",
+		ExpiresIn: int(time.Now().Add(3 * time.Hour).Unix()),
+	}
+	sign := "test_sign"
+	data := map[string]string{
+		"role": "moderator",
+		"uid":  "user789",
+	}
+
+	accessToken, err := GenerateAccessToken(token, data, sign, "sample_issuer")
+	require.NoError(t, err)
+
+	// 測試 claims 解析
+	parsedClaims, err := ParseClaims(accessToken, sign, true)
+	require.NoError(t, err)
+	require.Equal(t, "moderator", parsedClaims["role"])
+	require.Equal(t, "user789", parsedClaims["uid"])
+}