diff --git a/wx/V3/WxV3PaymentTait.php b/wx/V3/WxV3PaymentTait.php
index 5d6070b..1f69e3a 100644
--- a/wx/V3/WxV3PaymentTait.php
+++ b/wx/V3/WxV3PaymentTait.php
@@ -75,10 +75,11 @@ trait WxV3PaymentTait
     {
         $config = $this->getPayConfig();
 
-        $sign = $this->signature('POST', '/v3/pay/transactions/out-trade-no/' . $orderNo . '?mchid=' . $config->pay->wx->mchId, "");
+        $parseUrl = '/v3/pay/transactions/out-trade-no/' . $orderNo . '?mchid=' . $config->pay->wx->mchId;
+        $sign     = $this->signature('POST', $parseUrl, "");
 
         $client = $this->createClient($sign, "");
-        $client->get('/v3/pay/transactions/out-trade-no/' . $orderNo . '?mchid=' . $config->pay->wx->mchId);
+        $client->get($parseUrl);
         $client->close();
 
         return json_decode($client->getBody(), TRUE);