diff --git a/application/third_party/tuniu/controllers/tuniu_train.php b/application/third_party/tuniu/controllers/tuniu_train.php
index 56556403..c8f64aeb 100644
--- a/application/third_party/tuniu/controllers/tuniu_train.php
+++ b/application/third_party/tuniu/controllers/tuniu_train.php
@@ -64,7 +64,7 @@ class Tuniu_train extends CI_Controller{
 			$api_start_time = microtime(true);		
 			
 			$back_data = post_tuniu($url,$post_data,$method = 'POST');
-
+			$back_data = null;
 			//接口结束时间
 			$api_end_time = microtime(true);
 			
@@ -79,9 +79,6 @@ class Tuniu_train extends CI_Controller{
 				$retrun_code = '404';
 				$return_msg = '途牛接口未响应';
 			}
-			//记录数据格式 |出发站|到达站|发车时间|接口响应时间|接口返回代码|接口返回信息
-			log_message('error','tuniutrain|'.$fromStation.'|'.$toStation.'|'.$date.'|'.$api_responsive_time.'|'.$retrun_code.'|'.$return_msg);
-			
 			
 			if(isset($tn_info->data)){
 				if(empty(json_decode($back_data)->data)){
@@ -100,13 +97,23 @@ class Tuniu_train extends CI_Controller{
 					$trainCache = $this->tuniuprice_model->get_train_cache($fromStation,$toStation);
 					if(!empty($trainCache)){
 						$back_data = $trainCache->tpc_content;
-						$isCache = true;
+						$cachedata = true;
 					}else{
 						$back_data = null;
+						$cachedata = false;
 					}
 				}	
 			}
 			
+			if($cachedata){
+				$cacheuse = '使用缓存';
+			}else{
+				$cacheuse = '缓存为空';
+			}
+			
+			//记录数据格式 |出发站|到达站|发车时间|接口响应时间|接口返回代码|接口返回信息|是否调用缓存
+			log_message('error','tuniutrain|'.$fromStation.'|'.$toStation.'|'.$date.'|'.$api_responsive_time.'|'.$retrun_code.'|'.$return_msg.'|'.$cacheuse);
+			
 			//途牛数据格式转换
 			$return_data = new stdClass();
 			$return_data->httpstatus = 200;