diff --git a/backend/common/security/jwt.py b/backend/common/security/jwt.py
index 26a00afb..2e0fd8d7 100644
--- a/backend/common/security/jwt.py
+++ b/backend/common/security/jwt.py
@@ -6,7 +6,7 @@ from asgiref.sync import sync_to_async
 from fastapi import Depends, Request
 from fastapi.security import HTTPBearer
 from fastapi.security.utils import get_authorization_scheme_param
-from jose import jwt
+from jose import ExpiredSignatureError, JWTError, jwt
 from passlib.context import CryptContext
 from sqlalchemy.ext.asyncio import AsyncSession
 
@@ -146,9 +146,9 @@ def jwt_decode(token: str) -> int:
         user_id = int(payload.get('sub'))
         if not user_id:
             raise TokenError(msg='Token 无效')
-    except jwt.ExpiredSignatureError:
+    except ExpiredSignatureError:
         raise TokenError(msg='Token 已过期')
-    except (jwt.JWTError, Exception):
+    except (JWTError, Exception):
         raise TokenError(msg='Token 无效')
     return user_id