diff --git a/app/common/service/JK8Services.php b/app/common/service/JK8Services.php
index 234a2b6..e39bdc8 100644
--- a/app/common/service/JK8Services.php
+++ b/app/common/service/JK8Services.php
@@ -11,6 +11,7 @@ class JK8Services
     private $domain = '';
     private $accessId = '';
     private $token = '';
+    private $merchantId = '';
 
     public function __construct()
     {
@@ -18,6 +19,7 @@ class JK8Services
         $this->domain = $config['api_url'];
         $this->accessId = $config['access_id'];
         $this->token = $config['token'];
+        $this->merchantId = $config['merchant_id'];
     }
 
     /**
@@ -32,6 +34,7 @@ class JK8Services
             'module'      => $method,
             'accessId'    => $this->accessId,
             'accessToken' => $this->token,
+            'merchantId'  => $this->merchantId,
             ...$params,
         ];
     }