diff --git a/app/api/controller/IndexController.php b/app/api/controller/IndexController.php
index e38e2bdf3..a522a1833 100644
--- a/app/api/controller/IndexController.php
+++ b/app/api/controller/IndexController.php
@@ -25,9 +25,10 @@ class IndexController extends BaseApiController
 
         try {
         $wechat = new PayService(1);
+        $time = time();
         $order = [
             'out_trade_no' => 'PF1717558027664507',
-            'out_refund_no' => time(),
+            'out_refund_no' => 'BO'.$time,
             'amount' => [
                 'refund' => 1,
                 'total' => 1,