diff --git a/FlyCube/MpApi/Controller/PayController.class.php b/FlyCube/MpApi/Controller/PayController.class.php
index 66e4980..b185224 100644
--- a/FlyCube/MpApi/Controller/PayController.class.php
+++ b/FlyCube/MpApi/Controller/PayController.class.php
@@ -79,6 +79,7 @@ class PayController extends PublicController
                 'total' => $order['total_price'] * 100, // 订单金额，单位：分
                 'currency' => 'CNY',
             ],
+            'notify_url' => C('host') . 'flycube.php/MpApi/Pay/notifyCallback', // 退款回调地址
         ];
 
         try {