diff --git a/src/Message/CompleteRefundRequest.php b/src/Message/CompleteRefundRequest.php
index 3615a83..b378b2a 100644
--- a/src/Message/CompleteRefundRequest.php
+++ b/src/Message/CompleteRefundRequest.php
@@ -20,16 +20,22 @@ public function setRequestParams($requestParams)
     public function sendData($data)
     {
         $data = $this->getData();
-        $sign = Helper::sign($data, $this->getApiKey());
 
         $responseData = array();
 
-        if (isset($data['sign']) && $data['sign'] && $sign === $data['sign']) {
-            $responseData['sign_match'] = true;
+        // 微信: 退款结果可能没有 sign 参数，解密通过即可
+        if (isset($data['sign'])) {
+            $sign = Helper::sign($data, $this->getApiKey());
+
+            if ($data['sign'] && $sign === $data['sign']) {
+                $responseData['sign_match'] = true;
+            } else {
+                $responseData['sign_match'] = false;
+            }
         } else {
-            $responseData['sign_match'] = false;
+            $responseData['sign_match'] = true;
         }
-
+        
         if ($responseData['sign_match'] && isset($data['refund_status']) && $data['refund_status'] == 'SUCCESS') {
             $responseData['refunded'] = true;
         } else {
diff --git a/src/Message/RefundOrderRequest.php b/src/Message/RefundOrderRequest.php
index 651ef2b..a3a1dbb 100644
--- a/src/Message/RefundOrderRequest.php
+++ b/src/Message/RefundOrderRequest.php
@@ -40,7 +40,8 @@ public function getData()
             'out_refund_no'   => $this->getOutRefundNo(),
             'total_fee'       => $this->getTotalFee(),
             'refund_fee'      => $this->getRefundFee(),
-            'refund_fee_type' => $this->getRefundFee(),//<>
+            'refund_fee_type' => $this->getRefundType(),//<>
+            'notify_url'      => $this->getNotifyUrl(), //*
             'op_user_id'      => $this->getOpUserId() ?: $this->getMchId(),
             'refund_account'  => $this->getRefundAccount(),
             'nonce_str'       => md5(uniqid()),
@@ -202,6 +203,23 @@ public function getRefundType()
     }
 
 
+    /**
+     * @return mixed
+     */
+    public function getNotifyUrl()
+    {
+        return $this->getParameter('notify_url');
+    }
+
+    
+    /**
+     * @param mixed $notifyUrl
+     */
+    public function setNotifyUrl($notifyUrl)
+    {
+        $this->setParameter('notify_url', $notifyUrl);
+    }
+
     /**
      * @param mixed $refundFeeType
      */