diff --git a/inventory-backend/app/services/auth_service.py b/inventory-backend/app/services/auth_service.py
index 0b74d30..9480a56 100644
--- a/inventory-backend/app/services/auth_service.py
+++ b/inventory-backend/app/services/auth_service.py
@@ -27,8 +27,11 @@ def _store_token_to_redis(user_id, token, token_type='access'):
         else:
             expires_delta = current_app.config.get('JWT_REFRESH_TOKEN_EXPIRES', timedelta(days=7))
 
-        # 转换为秒数
-        expires_seconds = int(expires_delta.total_seconds())
+        # 转换为秒数（兼容 timedelta 和 int 类型）
+        if isinstance(expires_delta, timedelta):
+            expires_seconds = int(expires_delta.total_seconds())
+        else:
+            expires_seconds = int(expires_delta)  # 已经是秒数（整数）
 
         # 存储到 Redis
         key = f"user_token_{user_id}"