diff --git a/app/api/model/PaymentTemplate.php b/app/api/model/PaymentTemplate.php
index 95864be0..f76ba8d4 100644
--- a/app/api/model/PaymentTemplate.php
+++ b/app/api/model/PaymentTemplate.php
@@ -35,14 +35,4 @@ class PaymentTemplate extends PaymentTemplateModel
         'create_time',
         'update_time'
     ];
-
-    /**
-     * 根据微信支付V3平台证书序号查找记录
-     * @param string $serial
-     * @return static|array|null
-     */
-    public static function findByWechatpaySerial(string $serial)
-    {
-        return static::get(['method' => PaymentMethodEnum::WECHAT, 'wechatpay_serial' => $serial,'is_delete' => 0]);
-    }
 }
diff --git a/app/common/model/PaymentTemplate.php b/app/common/model/PaymentTemplate.php
index bb5b0c1d..79616563 100644
--- a/app/common/model/PaymentTemplate.php
+++ b/app/common/model/PaymentTemplate.php
@@ -30,6 +30,15 @@ class PaymentTemplate extends BaseModel
     // 定义主键
     protected $pk = 'template_id';
 
+    /**
+     * 根据微信支付V3平台证书序号查找记录
+     * @param string $serial
+     * @return static|array|null
+     */
+    public static function findByWechatpaySerial(string $serial)
+    {
+        return static::get(['method' => PaymentMethodEnum::WECHAT, 'wechatpay_serial' => $serial,'is_delete' => 0]);
+    }
     /**
      * 获取器：支付配置
      * @param string $value
diff --git a/app/store/controller/Store.php b/app/store/controller/Store.php
index c9695d12..115fa011 100644
--- a/app/store/controller/Store.php
+++ b/app/store/controller/Store.php
@@ -23,6 +23,7 @@ use app\common\model\PriceSet;
  * Class Store
  * @package app\store\controller
  */
+
 class Store extends Controller
 {
     /**
diff --git a/app/store/model/PaymentTemplate.php b/app/store/model/PaymentTemplate.php
index 81c527fe..105d7e90 100644
--- a/app/store/model/PaymentTemplate.php
+++ b/app/store/model/PaymentTemplate.php
@@ -1,13 +1,4 @@
 <?php
-// +----------------------------------------------------------------------
-// | 萤火商城系统 [ 致力于通过产品和服务，帮助商家高效化开拓市场 ]
-// +----------------------------------------------------------------------
-// | Copyright (c) 2017~2023 https://www.yiovo.com All rights reserved.
-// +----------------------------------------------------------------------
-// | Licensed 这不是一个自由软件，不允许对程序代码以任何形式任何目的的再发行
-// +----------------------------------------------------------------------
-// | Author: 萤火科技 <admin@yiovo.com>
-// +----------------------------------------------------------------------
 declare (strict_types=1);
 
 namespace app\store\model;
@@ -60,6 +51,14 @@ class PaymentTemplate extends PaymentTemplateModel
         $data['store_id'] = self::$storeId;
         // 写入证书文件
         $data['config'] = [$data['method'] => $this->certFileName($data['method'], $methodConfig)];
+        // 记录微信支付v3平台证书序号
+        if ($data['method'] === 'wechat' && $data['config']['wechat']['version'] === 'v3') {
+            $data['wechatpay_serial'] = $data['config']['wechat'][$data['config']['wechat']['mchType']]['platformCertSerial'];
+            $info = PaymentTemplateModel::findByWechatpaySerial($data['wechatpay_serial']);
+            if ($info) {
+                throwError("当前商户号已使用过了");
+            }
+        }
         // 写入到数据库
         return $this->save($data);
     }
@@ -83,6 +82,11 @@ class PaymentTemplate extends PaymentTemplateModel
         // 记录微信支付v3平台证书序号
         if ($data['method'] === 'wechat' && $data['config']['wechat']['version'] === 'v3') {
             $data['wechatpay_serial'] = $data['config']['wechat'][$data['config']['wechat']['mchType']]['platformCertSerial'];
+            $info = PaymentTemplateModel::findByWechatpaySerial($data['wechatpay_serial']);
+            if ($info && $info->template_id != $data['templateId']) {
+                throwError("当前商户号已使用过了");
+            }
+
         }
         // 更新到数据库
         return $this->save($data) !== false;