diff --git a/packages/domain/auth/jwt_service.py b/packages/domain/auth/jwt_service.py
index 0c8c59e53..5b7bf640f 100644
--- a/packages/domain/auth/jwt_service.py
+++ b/packages/domain/auth/jwt_service.py
@@ -13,11 +13,41 @@ from jwt.exceptions import ExpiredSignatureError, InvalidTokenError
 class JWTConfig:
     """JWT 配置"""
 
-    # 从环境变量读取，这里先用默认值
-    SECRET_KEY: str = "your-secret-key-change-in-production"
-    ALGORITHM: str = "HS256"
-    ACCESS_TOKEN_EXPIRE_MINUTES: int = 30  # 30 分钟
-    REFRESH_TOKEN_EXPIRE_DAYS: int = 30  # 30 天
+    def __init__(self, secret_key: str, algorithm: str = "HS256", 
+                 access_token_expire_minutes: int = 30, 
+                 refresh_token_expire_days: int = 30):
+        """
+        初始化 JWT 配置
+        
+        Args:
+            secret_key: JWT 签名密钥（必须从环境变量或配置注入，不允许默认值）
+            algorithm: 加密算法，默认 HS256
+            access_token_expire_minutes: Access Token 过期时间（分钟）
+            refresh_token_expire_days: Refresh Token 过期时间（天）
+        
+        Raises:
+            ValueError: 如果 secret_key 为空或包含不安全默认值
+        """
+        if not secret_key or secret_key.strip() == "":
+            raise ValueError("JWT secret_key must be provided and cannot be empty")
+        
+        insecure_defaults = [
+            "your-secret-key-change-in-production",
+            "your-secret-key",
+            "secret",
+            "changeme",
+            "password",
+        ]
+        if secret_key.lower() in [d.lower() for d in insecure_defaults]:
+            raise ValueError(
+                f"JWT secret_key '{secret_key}' is insecure. "
+                "Please provide a strong random secret."
+            )
+        
+        self.SECRET_KEY: str = secret_key
+        self.ALGORITHM: str = algorithm
+        self.ACCESS_TOKEN_EXPIRE_MINUTES: int = access_token_expire_minutes
+        self.REFRESH_TOKEN_EXPIRE_DAYS: int = refresh_token_expire_days
 
 
 class TokenType:
@@ -31,7 +61,12 @@ class JWTService:
     """JWT 服务类"""
 
     def __init__(self, config: JWTConfig = None):
-        self.config = config or JWTConfig()
+        if config is None:
+            raise ValueError(
+                "JWTService requires a JWTConfig instance. "
+                "Please provide a configured JWTConfig with a valid secret_key."
+            )
+        self.config = config
 
     def create_access_token(
         self,
@@ -123,12 +158,7 @@ class JWTService:
             token: JWT Token 字符串
 
         Returns:
-            Token payload
-
-        Raises:
-            ValueError: Token 类型不是 access
-            ExpiredSignatureError: Token 已过期
-            InvalidTokenError: Token 无效
+            Token payload（如果解码失败返回 None）
         """
         payload = self.verify_token(token)
 
@@ -137,7 +167,7 @@ class JWTService:
 
         return payload
 
-    def verify_refresh_token(self, token: str) -> Dict[str, Any]:
+    def verify_verify_refresh_token(self, token: str) -> Dict[str, Any]:
         """
         验证 refresh_token
 
@@ -175,5 +205,5 @@ class JWTService:
             return None
 
 
-# 全局实例（生产环境应该从配置读取）
-jwt_service = JWTService()
+# 全局实例（生产环境必须从配置读取有效的 secret_key）
+# jwt_service = JWTService()  # 不再允许无参数实例化