diff --git a/webht/third_party/pay/controllers/AlipayTradeService.php b/webht/third_party/pay/controllers/AlipayTradeService.php
index 709e64bf..1a64536b 100644
--- a/webht/third_party/pay/controllers/AlipayTradeService.php
+++ b/webht/third_party/pay/controllers/AlipayTradeService.php
@@ -531,6 +531,26 @@ class AlipayTradeService extends CI_Controller
         return $response;
     }
 
+    /*!
+     * 查询退款
+     * @date   2019-04-24
+     * @param  [type]     $dealId   必须, 退款交易号.out_biz_no
+     * @param  [type]     $trade_no 必须, 原收款交易号
+     */
+    public function query_refund($dealId=NULL,$trade_no=NULL)
+    {
+        $this->AlipayTradeQueryContentBuilder->setTradeNo($trade_no);
+        $this->AlipayTradeQueryContentBuilder->setOutRequestNo($dealId);
+
+        $biz_content=$this->AlipayTradeQueryContentBuilder->getBizContent();
+        $request = new AlipayTradeFastpayRefundQueryRequest();
+        $request->setBizContent ( $biz_content );
+
+        $response = $this->aopclientRequestExecute ($request);
+        // $response = $response->alipay_trade_fastpay_refund_query_response;
+        return $this->output->set_content_type('application/json')->set_output(json_encode($response));
+    }
+
     /*!
      * 对账单
      * 流程:
@@ -546,8 +566,8 @@ class AlipayTradeService extends CI_Controller
     {
         $request = new AlipayDataDataserviceBillDownloadurlQueryRequest();
         $request->setBizContent("{" .
-        "\"bill_type\":\"trade\"," .
-        "\"bill_date\":\"2017-09\"" .
+        "\"bill_type\":\"signcustomer\"," .
+        "\"bill_date\":\"2019-04-03\"" .
         "}");
         $response = $this->aopclientRequestExecute ($request);
 // var_dump($response);
diff --git a/webht/third_party/pay/models/AlipayTradeQueryContentBuilder.php b/webht/third_party/pay/models/AlipayTradeQueryContentBuilder.php
index ed892a77..16dd1734 100644
--- a/webht/third_party/pay/models/AlipayTradeQueryContentBuilder.php
+++ b/webht/third_party/pay/models/AlipayTradeQueryContentBuilder.php
@@ -50,6 +50,21 @@ class AlipayTradeQueryContentBuilder extends CI_Model
         $this->outTradeNo = $outTradeNo;
         $this->bizContentarr['out_trade_no'] = $outTradeNo;
     }
+
+    /**
+     * 查询退款
+     */
+    private $out_request_no;
+    public function getOutRequestNo()
+    {
+        return $this->out_request_no;
+    }
+    public function setOutRequestNo($outRequestNo)
+    {
+        $this->out_request_no = $outRequestNo;
+        $this->bizContentarr['out_request_no'] = $outRequestNo;
+    }
+
 }
 
 ?>