diff --git a/app/Libs/WxMicroPay.class.php b/app/Libs/WxMicroPay.class.php
index 946f592..14b9aca 100644
--- a/app/Libs/WxMicroPay.class.php
+++ b/app/Libs/WxMicroPay.class.php
@@ -44,7 +44,7 @@ class WxMicroPay extends WxPayCommon
 
             //判断接口是否返回成功
             if (!array_key_exists("return_code", $result) || !array_key_exists("result_code", $result)) {
-                throw new Exception("接口调用失败！");
+                throw new Exception(json_encode($result));
             }
             if ($result["return_code"] == "SUCCESS" && $result["result_code"] == "FAIL" && $result["err_code"] != "USERPAYING" && $result["err_code"] != "SYSTEMERROR") {
                 throw new Exception("支付失败！");