diff --git a/src/main/java/au/com/royalpay/payment/manage/dev/core/impl/CommonSubMerchantIdServiceImpl.java b/src/main/java/au/com/royalpay/payment/manage/dev/core/impl/CommonSubMerchantIdServiceImpl.java
index 9a37efaf5..3ec59a5bd 100644
--- a/src/main/java/au/com/royalpay/payment/manage/dev/core/impl/CommonSubMerchantIdServiceImpl.java
+++ b/src/main/java/au/com/royalpay/payment/manage/dev/core/impl/CommonSubMerchantIdServiceImpl.java
@@ -22,6 +22,10 @@ public class CommonSubMerchantIdServiceImpl implements CommonSubMerchantIdServic
     private MpPaymentApi mpPaymentApi;
     @Override
     public void save(JSONObject record) {
+        JSONObject sub_merchant_id = commonSubMerchantIdMapper.find(record.getString("sub_merchant_id"));
+        if(sub_merchant_id!=null){
+            throw new BadRequestException("当前商户号已经添加，请重新输入");
+        }
         WeChatPayConfig.Merchant availableMerchant = mpPaymentApi.determineMerchant(record.getString("sub_merchant_id"));
         if(availableMerchant == null){
             throw new BadRequestException("未检索到对应的商户号，请验证子商户号是否正确");
diff --git a/src/main/java/au/com/royalpay/payment/manage/mappers/payment/CommonSubMerchantIdMapper.java b/src/main/java/au/com/royalpay/payment/manage/mappers/payment/CommonSubMerchantIdMapper.java
index fb4e3ce18..278c22569 100644
--- a/src/main/java/au/com/royalpay/payment/manage/mappers/payment/CommonSubMerchantIdMapper.java
+++ b/src/main/java/au/com/royalpay/payment/manage/mappers/payment/CommonSubMerchantIdMapper.java
@@ -23,4 +23,8 @@ public interface CommonSubMerchantIdMapper {
 
     @AutoSql(type = SqlType.UPDATE)
     void update(JSONObject record);
+
+    @AutoSql(type = SqlType.SELECT)
+    JSONObject find(@Param("sub_merchant_id")String sub_merchant_id);
+
 }
diff --git a/src/main/ui/static/config/devtools/devtools.js b/src/main/ui/static/config/devtools/devtools.js
index 5d34fa182..823028494 100644
--- a/src/main/ui/static/config/devtools/devtools.js
+++ b/src/main/ui/static/config/devtools/devtools.js
@@ -347,6 +347,7 @@ define(['angular', 'uiRouter', 'uiBootstrap'], function (angular) {
             var params = angular.copy($scope.params);
             $http.post('/dev/common_sub_merchant_id',{params: params}).then(function (resp) {
                 alert("保存成功");
+                $scope.loadSubMerchantId(1);
             },function (resp) {
                 alert(resp.data.message);
             });