diff --git a/digital-avatar-app/backend/routers/tokens.py b/digital-avatar-app/backend/routers/tokens.py
index a4bc8aa..3a030b6 100644
--- a/digital-avatar-app/backend/routers/tokens.py
+++ b/digital-avatar-app/backend/routers/tokens.py
@@ -1087,12 +1087,12 @@ async def huihui_virtual_payment_notify(request: Request, db: Session = Depends(
         callback_env = int(payload.get("env"))
     except (TypeError, ValueError, WechatVirtualPaymentError):
         raise HTTPException(status_code=422, detail="invalid virtual payment details")
+    callback_open_id = str(payload.get("openId") or "").strip()
     if (
         isinstance(payload.get("amountCents"), bool)
         or isinstance(payload.get("env"), bool)
         or not user
-        or not user.wechat_mp_openid
-        or str(payload.get("openId") or "") != user.wechat_mp_openid
+        or (callback_open_id and callback_open_id != user.wechat_mp_openid)
         or not expected_product_id
         or str(payload.get("productId") or "") != expected_product_id
         or amount_cents != order.price_cents