diff --git a/app/Http/Controllers/Mobile/VisitController.php b/app/Http/Controllers/Mobile/VisitController.php
index 39b595a..47a39d9 100644
--- a/app/Http/Controllers/Mobile/VisitController.php
+++ b/app/Http/Controllers/Mobile/VisitController.php
@@ -325,8 +325,7 @@ class VisitController extends CommonController
         }
         $model = new StudyLog();
         $list = $model->whereIn('idcard', $all['idcard'])->pluck('idcard');
-        dd($list);
-        $diff = collect($all['idcard'])->diffAssoc($list);
+        $diff = collect($all['idcard'])->diff($list);
         if($diff->isNotEmpty()){
             $diff = array_values($diff->toArray());
         }