diff --git a/gan-modules/ruoyi-gan/src/main/java/com/ruoyi/app/service/AlipayService.java b/gan-modules/ruoyi-gan/src/main/java/com/ruoyi/app/service/AlipayService.java
index d243199..3e643c8 100644
--- a/gan-modules/ruoyi-gan/src/main/java/com/ruoyi/app/service/AlipayService.java
+++ b/gan-modules/ruoyi-gan/src/main/java/com/ruoyi/app/service/AlipayService.java
@@ -155,7 +155,7 @@ public class AlipayService {
                 signParams.put("personal_product_code","CYCLE_PAY_AUTH_P");
                 //signParams.put("sign_scene","INDUSTRY|DIGITAL_MEDIA");
                 signParams.put("sign_scene","INDUSTRY|MOBILE");
-                signParams.put("external_agreement_no",orderNo);
+                signParams.put("external_agreement_no",KeyUtil.generateUniqueKey());
 
                 JSONObject accessParams = new JSONObject();
                 accessParams.put("channel","QRCODEORSMS");