diff --git a/ThinkPHP/Library/Org/Kudian/Client.php b/ThinkPHP/Library/Org/Kudian/Client.php
index 3d973ab..6181ca8 100644
--- a/ThinkPHP/Library/Org/Kudian/Client.php
+++ b/ThinkPHP/Library/Org/Kudian/Client.php
@@ -11,7 +11,9 @@ class Client
         $response = '';
         try {
             $response = $this->post($request->getUrl(), $request->getParams());
+            Log::write('REQUEST_RESPONSE: ' . $response);
         } catch (Exception $e) {
+            Log::write('REQUEST_ERROR: ' . $e->getMessage());
             $response = json_encode([
                 'code' => -999,
                 'msg' => '网络错误',
@@ -25,6 +27,8 @@ class Client
 
     public function post($url, $params): string
     {
+        Log::write('REQUEST_URL: ' . json_encode($url));
+        Log::write('REQUEST_DATA: ' . json_encode($params));
         $curl = curl_init();
         if (stripos($url, 'https://') !== false){
             curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
diff --git a/ThinkPHP/Library/Org/Kudian/Config.php b/ThinkPHP/Library/Org/Kudian/Config.php
index 6a54432..d66830a 100644
--- a/ThinkPHP/Library/Org/Kudian/Config.php
+++ b/ThinkPHP/Library/Org/Kudian/Config.php
@@ -4,6 +4,7 @@ namespace Org\Kudian;
 class Config
 {
     private static $params = [
+        'base_url' => 'https://pay.kudianvip.com',
         'mch_id' => 'KP10009694',
         'secret_key' => 'q5zZyyA071zS0SZR6xcz0gP0fFhtojqq',
     ];
diff --git a/ThinkPHP/Library/Org/Kudian/Log.php b/ThinkPHP/Library/Org/Kudian/Log.php
new file mode 100644
index 0000000..0313c82
--- /dev/null
+++ b/ThinkPHP/Library/Org/Kudian/Log.php
@@ -0,0 +1,12 @@
+<?php
+namespace Org\Kudian;
+
+use Think\Log as ThinkLog;
+
+class Log
+{
+    public static function write($message, $level = ThinkLog::INFO) {
+        $destination = C('LOG_PATH'). 'kudian/' . date('y_m_d').'.log';        
+        ThinkLog::write($message, $level, '', $destination);
+    }
+}
\ No newline at end of file
diff --git a/ThinkPHP/Library/Org/Kudian/Request/Request.php b/ThinkPHP/Library/Org/Kudian/Request/Request.php
index 530f4aa..a61c7df 100644
--- a/ThinkPHP/Library/Org/Kudian/Request/Request.php
+++ b/ThinkPHP/Library/Org/Kudian/Request/Request.php
@@ -59,6 +59,6 @@ class Request
     }
 
     public function getUrl() {
-        return $this->url;
+        return Config::get('base_url') . $this->url;
     }
 }
\ No newline at end of file
diff --git a/ThinkPHP/Library/Org/Kudian/Response.php b/ThinkPHP/Library/Org/Kudian/Response.php
index 818984e..1ac85df 100644
--- a/ThinkPHP/Library/Org/Kudian/Response.php
+++ b/ThinkPHP/Library/Org/Kudian/Response.php
@@ -24,8 +24,10 @@ class Response
     {
         $data = null;
         if (is_array($response)) {
+            Log::write('RESPONSE_ARRAY: ' . json_encode($response));
             $data = $response;
         } else {
+            Log::write('RESPONSE_STR: ' . $response);
             $data = json_decode($response);
         }
         if (!$data) {
diff --git a/ThinkPHP/Library/Org/Kudian/Sign.php b/ThinkPHP/Library/Org/Kudian/Sign.php
index 0c044c5..b80ecd7 100644
--- a/ThinkPHP/Library/Org/Kudian/Sign.php
+++ b/ThinkPHP/Library/Org/Kudian/Sign.php
@@ -7,6 +7,7 @@ class Sign
 
     public static function generate($params, $secretKey)
     {
+        Log::write('SIGN_PARAMS: ' . json_encode($params));
         unset($params[self::SIGN_KEY]);
         ksort($params);
         $signStr = '';
@@ -14,6 +15,7 @@ class Sign
             $signStr .= $key . "=" . $value . "&";
         }
         $signStr = rtrim($signStr, '&') . "&secret_key=" . $secretKey;
+        Log::write('SIGN_STR: ' . $signStr);
         $sign = md5($signStr);
         $sign = strtoupper($sign);
         return $sign;