diff --git a/Model/DeviceEntity.cs b/Model/DeviceEntity.cs
index 7e8f76b..76de119 100644
--- a/Model/DeviceEntity.cs
+++ b/Model/DeviceEntity.cs
@@ -1,4 +1,5 @@
-using LY.App.Device;
+using GraphQL;
+using LY.App.Device;
 using Newtonsoft.Json;
 using SqlSugar;
 
@@ -75,6 +76,8 @@ namespace LY.App.Model
         [SugarColumn(ColumnName = "is_move", ColumnDescription = "是否移动设备", IsNullable = true)]
 
         public bool isMove { get; set; }
+        [SugarColumn(IsIgnore = true)]
+        public bool online { get; set; }
 
 
     }
diff --git a/Service/DeviceService.cs b/Service/DeviceService.cs
index 01b9879..6f074de 100644
--- a/Service/DeviceService.cs
+++ b/Service/DeviceService.cs
@@ -47,6 +47,10 @@ namespace LY.App.Service
                 .WhereIF(!string.IsNullOrEmpty(key), s => s.Name.Contains(key) || s.DeviceSN.Contains(key))
                 .OrderByDescending(s => s.Id)
                 .ToPageListAsync(pageNum, pageSize, total);
+            items.ForEach(async s =>
+            {
+                s.online = await _redisService.ExistsAsync(RedisKeyList.DeviceStatus(s.DeviceSN));
+            });
             return new ApiResult()
             {
                 data = new