diff --git a/src/main/java/com/jwl/driver/server/controller/AppletPayController.java b/src/main/java/com/jwl/driver/server/controller/AppletPayController.java
index 8981333..9214d0b 100644
--- a/src/main/java/com/jwl/driver/server/controller/AppletPayController.java
+++ b/src/main/java/com/jwl/driver/server/controller/AppletPayController.java
@@ -56,7 +56,7 @@ public class AppletPayController {
         request.setMchid(wechatPayConfig.getMchId());
         request.setDescription(payDto.getDescription());
         request.setNotifyUrl(wechatPayConfig.getPayNoticeUrl());
-        request.setOutTradeNo(payDto.getOutTradeNo());
+        request.setOutTradeNo(orderPayInfo.getPayId().toString());
 
         Payer payer = new Payer();
         payer.setOpenid(WechatPayUtil.getOpenId(wechatPayConfig.getAppId(), wechatPayConfig.getAppSecret(), payDto.getCode()));