diff --git a/app/api/controller/InformationController.php b/app/api/controller/InformationController.php
index b5a63f291..40c3d2e60 100644
--- a/app/api/controller/InformationController.php
+++ b/app/api/controller/InformationController.php
@@ -87,7 +87,7 @@ class InformationController extends BaseApiController
         }
         if(isset($param['task_id'])&& $param['task_id']>0){
             $task=Task::where('id',$param['task_id'])->find();
-            $extend=json_decode($task['extend'],true);
+            $extend=$task['extend'];
             $extend['informationg_demand']=$res['id'];
             $task->extend=json_encode($extend);
             $task->save();