diff --git a/application/third_party/tuniu/controllers/tuniu_train.php b/application/third_party/tuniu/controllers/tuniu_train.php
index 7a254903..a541ab3f 100644
--- a/application/third_party/tuniu/controllers/tuniu_train.php
+++ b/application/third_party/tuniu/controllers/tuniu_train.php
@@ -61,39 +61,47 @@ class Tuniu_train extends CI_Controller{
 					"data": { "trainDate": "'.$date.'", "fromStation": "'.$fromStation.'", "toStation": "'.$toStation.'", "trainCode": "" } 
 					}';		
 			$back_data = post_tuniu($url,$post_data,$method = 'POST');
-
-			//如果数据为空则调用缓存,有数据则进行数据存储
-			if(empty($back_data)){
-				log_message('error','tuniutrain 接口未响应|数据源:'.$fromStation.'|'.$toStation.'|'.$date);
-				$trainCache = $this->tuniuprice_model->get_train_cache($fromStation,$toStation);
-				$back_data = $trainCache->tpc_content;
-				$isCache = true;
-			}else{
+			
+			//print_r(json_decode($back_data));die();
+			$log_info = '';
+			
+			if(isset(json_decode($back_data)->data)){
+				$tn_info = json_decode($back_data);
+				$retrun_code = $tn_info->returnCode;
+				$return_msg = $tn_info->errorMsg;
 				if(empty(json_decode($back_data)->data)){
-					$error = json_decode($back_data);
+					$isCache = true;
+				}else{
+					$this->tuniuprice_model->addOrUpdate($fromStation,$toStation,$back_data);
+				}
+				$log_info = 'tuniutrain 查询数据:'.$fromStation.'|'.$toStation.'|'.$date.'|retrun_code:'.$retrun_code.'|return_msg:'.$return_msg;
+			}else{
+				$isCache = true;
+				$log_info = 'tuniutrain 接口未响应|数据源:'.$fromStation.'|'.$toStation.'|'.$date;
+				
+			}
+			
+			if($isCache){
+				if($differ <= 5){
+					$back_data = null;
+				}else{
+					echo '123';
 					$trainCache = $this->tuniuprice_model->get_train_cache($fromStation,$toStation);
 					if(!empty($trainCache)){
 						$back_data = $trainCache->tpc_content;
 						$isCache = true;
-						log_message('error','tuniutrain 查询出错|'.$error->errorMsg);
+						$log_info .= '|调用缓存';
+						log_message('error',$log_info);
 					}else{
 						$back_data = null;
-						log_message('error','tuniutrain 缓存为空|'.$fromStation.'|'.$toStation.'|'.$date);
+						$log_info .= '|缓存为空';
+						log_message('error',$log_info);
 					}
-					
-				}else{
-					$this->tuniuprice_model->addOrUpdate($fromStation,$toStation,$back_data);
-				}
+				}	
 			}
-
+			
 			//途牛数据格式转换
 			$return_data = new stdClass();
-			if(empty($back_data)){
-				$return_data->returnCode = '404';
-			}else{
-				$return_data->returnCode = json_decode($back_data)->returnCode;
-			}
-			
 			$return_data->httpstatus = 200;
 			$return_data->data = new stdClass(); 
 			$return_data->data->seven = $iseven;