diff --git a/application/third_party/tuniu/controllers/tuniu_train.php b/application/third_party/tuniu/controllers/tuniu_train.php
index 58434531..07e716e2 100644
--- a/application/third_party/tuniu/controllers/tuniu_train.php
+++ b/application/third_party/tuniu/controllers/tuniu_train.php
@@ -65,10 +65,11 @@ class Tuniu_train extends CI_Controller{
 			//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;
+			$tn_info = json_decode($back_data);
+			$retrun_code = $tn_info->returnCode;
+			$return_msg = $tn_info->errorMsg;
+			
+			if(isset($tn_info->data)){
 				if(empty(json_decode($back_data)->data)){
 					$isCache = true;
 				}else{
@@ -78,7 +79,6 @@ class Tuniu_train extends CI_Controller{
 			}else{
 				$isCache = true;
 				$log_info = 'tuniutrain 接口未响应|数据源:'.$fromStation.'|'.$toStation.'|'.$date.'|retrun_code'.$retrun_code.'|return_msg:'.$return_msg;
-				
 			}
 			
 			if($isCache){