diff --git a/backend/app/routers/auth.py b/backend/app/routers/auth.py
index 8993663..ccf1ba6 100644
--- a/backend/app/routers/auth.py
+++ b/backend/app/routers/auth.py
@@ -84,9 +84,12 @@ def login(
     form_data: OAuth2PasswordRequestForm = Depends(),
     db: Session = Depends(get_db)
 ):
-    """用户登录"""
-    # 查找用户
+    """用户登录 - 支持用户名或用户编码登录"""
+    # 先尝试用户名登录
     user = db.query(User).filter(User.f01_01_name == form_data.username).first()
+    # 如果用户名不存在，尝试用户编码登录
+    if not user:
+        user = db.query(User).filter(User.user_code == form_data.username).first()
     if not user:
         raise HTTPException(
             status_code=status.HTTP_401_UNAUTHORIZED,