diff --git a/WeChat/Contracts/BasicWePay.php b/WeChat/Contracts/BasicWePay.php
index 7af01a4..097b0ab 100644
--- a/WeChat/Contracts/BasicWePay.php
+++ b/WeChat/Contracts/BasicWePay.php
@@ -92,7 +92,7 @@ class BasicWePay
 
     /**
      * 获取微信支付通知
-     * @param string $xml
+     * @param string|array $xml
      * @return array
      * @throws \WeChat\Exceptions\InvalidResponseException
      */
diff --git a/WePay/Refund.php b/WePay/Refund.php
index 14c61b0..4f068cb 100644
--- a/WePay/Refund.php
+++ b/WePay/Refund.php
@@ -57,14 +57,14 @@ class Refund extends BasicWePay
 
     /**
      * 获取退款通知
-     * @param string $xml
+     * @param string|array $xml
      * @return array
      * @throws \WeChat\Exceptions\InvalidDecryptException
      * @throws \WeChat\Exceptions\InvalidResponseException
      */
     public function getNotify($xml = '')
     {
-        $data = Tools::xml2arr(empty($xml) ? Tools::getRawInput() : $xml);
+        $data = is_array($xml) ? $xml : Tools::xml2arr(empty($xml) ? Tools::getRawInput() : $xml);
         if (!isset($data['return_code']) || $data['return_code'] !== 'SUCCESS') {
             throw new InvalidResponseException('获取退款通知XML失败！');
         }