diff --git a/webht/third_party/pay/controllers/AlipayTradeService.php b/webht/third_party/pay/controllers/AlipayTradeService.php
index 6bd08c44..173346c2 100644
--- a/webht/third_party/pay/controllers/AlipayTradeService.php
+++ b/webht/third_party/pay/controllers/AlipayTradeService.php
@@ -780,9 +780,10 @@ class AlipayTradeService extends CI_Controller
     public function get_billfile($date=NULL)
     {
         $request = new AlipayDataDataserviceBillDownloadurlQueryRequest();
+        $date = $date===NULL ? "2019-05-16" : $date;
         $request->setBizContent("{" .
         "\"bill_type\":\"signcustomer\"," .
-        "\"bill_date\":\"2019-04-25\"" .
+        "\"bill_date\":\"$date\"" .
         "}");
         $response = $this->aopclientRequestExecute ($request);
 // var_dump($response);