diff --git a/app/api/v1/auth.py b/app/api/v1/auth.py
index 1c41128..36ba926 100644
--- a/app/api/v1/auth.py
+++ b/app/api/v1/auth.py
@@ -94,7 +94,8 @@ async def wechat_login(
                 referral_user = await user_service.get_user_by_user_code(db, user_code=user_create.referral_code)
                 if referral_user:
                     referral_user.tryon_remain_count += settings.TRYON_ADDITIONAL_COUNT
-                    await user_service.update_user(db, user_id=referral_user.id, user_update=referral_user)
+                    await db.commit()
+                    await db.refresh(referral_user)
 
             user = await user_service.create_user(db, user=user_create)
             logger.info(f"创建新用户: id={user.id}")