diff --git a/WePayV3/Contracts/BasicWePay.php b/WePayV3/Contracts/BasicWePay.php
index fc81575..82548f9 100644
--- a/WePayV3/Contracts/BasicWePay.php
+++ b/WePayV3/Contracts/BasicWePay.php
@@ -157,8 +157,11 @@ abstract class BasicWePay
         $location = (preg_match('|^https?://|', $pathinfo) ? '' : $this->base) . $pathinfo;
         list($header, $content) = $this->_doRequestCurl($method, $location, [
             'data' => $jsondata, 'header' => [
-                "Accept: application/json", "Content-Type: application/json",
-                'User-Agent: https://thinkadmin.top', "Authorization: WECHATPAY2-SHA256-RSA2048 {$token}",
+                'Accept: application/json',
+                'Content-Type: application/json',
+                'User-Agent: https://thinkadmin.top',
+                "Authorization: WECHATPAY2-SHA256-RSA2048 {$token}",
+                "Wechatpay-Serial: {$this->config['cert_serial']}"
             ],
         ]);
 
diff --git a/WePayV3/Transfers.php b/WePayV3/Transfers.php
index 30ac5e7..0d75b49 100644
--- a/WePayV3/Transfers.php
+++ b/WePayV3/Transfers.php
@@ -20,7 +20,7 @@ use WePayV3\Contracts\BasicWePay;
 
 /**
  * 普通商户商家转账到零钱
- * Class Transfers
+ * @class Transfers
  * @package WePayV3
  */
 class Transfers extends BasicWePay
@@ -29,10 +29,16 @@ class Transfers extends BasicWePay
      * 发起商家批量转账
      * @param array $body
      * @return array
+     * @throws \WeChat\Exceptions\InvalidDecryptException
      * @throws \WeChat\Exceptions\InvalidResponseException
      */
     public function batchs($body)
     {
+        if (isset($body['transfer_detail_list']) && is_array($body['transfer_detail_list'])) {
+            foreach ($body['transfer_detail_list'] as &$item) if (isset($item['user_name'])) {
+                $item['user_name'] = $this->rsaEncode($item['user_name']);
+            }
+        }
         return $this->doRequest('POST', '/v3/transfer/batches', json_encode($body, JSON_UNESCAPED_UNICODE), true);
     }