diff --git a/Service/DeviceService.cs b/Service/DeviceService.cs
index a6b53c1..ccb9e2e 100644
--- a/Service/DeviceService.cs
+++ b/Service/DeviceService.cs
@@ -47,12 +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 =>
+            foreach (var item in items)
             {
-                var status = await _redisService.ExistsAsync(RedisKeyList.DeviceStatus(s.DeviceSN));
-                s.online = status;
-            });
+                item.online = await _redisService.ExistsAsync(RedisKeyList.DeviceStatus(item.DeviceSN));
+            }
             return new ApiResult()
             {
                 data = new