diff --git a/application/index/controller/Device.php b/application/index/controller/Device.php
index b84f0d0..f00da35 100644
--- a/application/index/controller/Device.php
+++ b/application/index/controller/Device.php
@@ -53,7 +53,8 @@ class Device extends Base
         $num = Db::table("bs_product_device")->where($where)->count();
 
         foreach ($result as &$item) {
-
+            if ($item['onlineAt']) $item['onlineAt'] = date("Y-m-d H:i:s",substr($item['onlineAt'],0,10));
+            if ($item['offlineAt']) $item['offlineAt'] = date("Y-m-d H:i:s",substr($item['offlineAt'],0,10));
         }
 
         $list["msg"] = "";