diff --git a/Src/Dlhis.Basic/Device/Services/Implements/DeviceService.cs b/Src/Dlhis.Basic/Device/Services/Implements/DeviceService.cs
index 4818fb29..e044f11c 100644
--- a/Src/Dlhis.Basic/Device/Services/Implements/DeviceService.cs
+++ b/Src/Dlhis.Basic/Device/Services/Implements/DeviceService.cs
@@ -244,13 +244,13 @@ public class DeviceService : IDeviceService
             .Where(x => x.Type == DeviceTypeEnumType.Attendance && x.Enable)
             .ToListAsync();
 
-        var offlineNumber = GetOfflineDevicesCount(devices).Count;
+        var offlineNumber = await GetOfflineDevicesCount(devices);
 
         var res = new DeviceNumberResponse
         { 
-            OfflineNumber = offlineNumber,
-            TotalNumber = devices.Count(),
-            OnlineNumber = devices.Count()- offlineNumber
+            OfflineNumber = offlineNumber.Count,
+            TotalNumber = devices.Count,
+            OnlineNumber = devices.Count- offlineNumber.Count
         };
         return res;
     }
@@ -259,12 +259,22 @@ public class DeviceService : IDeviceService
     /// </summary>
     /// <param name="devices"></param>
     /// <returns></returns>
-    private List<DeviceEntity> GetOfflineDevicesCount(List<DeviceEntity> devices)
+    private async Task<List<DeviceEntity>> GetOfflineDevicesCount(List<DeviceEntity> devices)
     {
+        var nos = devices.Select(x => x.UniqueNo).ToList();
+        var deviceRegistrys = await _dbContext.Queryable<DeviceRegistryEntity>()
+            .Where(x => nos.Contains(x.DeviceUniqueNo))
+            .ToListAsync();
+
         var list = new List<DeviceEntity>();
         foreach (var device in devices)
         {
-            TimeSpan timeDifference = DateTime.Now - device.ModifiedTime;
+            var regis = deviceRegistrys.FirstOrDefault(x => x.DeviceUniqueNo == device.UniqueNo);
+                if (regis == null)
+            {
+                continue;
+            }
+            TimeSpan timeDifference = DateTime.Now - regis.LastHeartbeatTime;
             if (timeDifference.TotalSeconds > (device.HeartbeatInterval * 3))
             {
                list.Add(device);
@@ -297,7 +307,7 @@ public class DeviceService : IDeviceService
             .ToListAsync();
 
         //离线
-        var offDevices = GetOfflineDevicesCount(devices);
+        var offDevices =await  GetOfflineDevicesCount(devices);
         var offids = offDevices.Select(x => x.Id).ToList();
 
         if (request.IsOnAndOff)
diff --git a/Src/Dlhis.Canteen/Order/Services/Implements/BalanceService.cs b/Src/Dlhis.Canteen/Order/Services/Implements/BalanceService.cs
index e4e1e6f6..ac23c1cd 100644
--- a/Src/Dlhis.Canteen/Order/Services/Implements/BalanceService.cs
+++ b/Src/Dlhis.Canteen/Order/Services/Implements/BalanceService.cs
@@ -554,7 +554,7 @@ public class BalanceService : IBalanceService
             .Where(x => x.Type == DeviceTypeEnumType.Meal && x.Enable)
             .ToListAsync();
 
-        var offCount = GetOfflineDevicesCount(devices).Count;
+        var offCount = await GetOfflineDevicesCount(devices);
 
         var places = await _dbContext.Queryable<BusinessPlaceEntity>()
             .ToListAsync();
@@ -581,9 +581,9 @@ public class BalanceService : IBalanceService
 
         var res = new ConsumeNumberResponse
         {
-            Total = devices.Count(),
-            OffNumber = offCount,
-            PlaceNumber = places.Count(),
+            Total = devices.Count,
+            OffNumber = offCount.Count,
+            PlaceNumber = places.Count,
             ConsumerableNumber = consumerable,
             DailyNumber = monthlyCount != 0 ? Math.Abs((int)Math.Ceiling(monthlySpending / monthlyCount)) : 0,
             Days = days,
@@ -598,12 +598,22 @@ public class BalanceService : IBalanceService
     /// </summary>
     /// <param name="devices"></param>
     /// <returns></returns>
-    private List<DeviceEntity> GetOfflineDevicesCount(List<DeviceEntity> devices)
+    private async Task<List<DeviceEntity>> GetOfflineDevicesCount(List<DeviceEntity> devices)
     {
+        var nos = devices.Select(x => x.UniqueNo).ToList();
+        var deviceRegistrys = await _dbContext.Queryable<DeviceRegistryEntity>()
+            .Where(x => nos.Contains(x.DeviceUniqueNo))
+            .ToListAsync();
+
         var list = new List<DeviceEntity>();
         foreach (var device in devices)
         {
-            TimeSpan timeDifference = DateTime.Now - device.ModifiedTime;
+            var regis = deviceRegistrys.FirstOrDefault(x => x.DeviceUniqueNo == device.UniqueNo);
+            if (regis == null)
+            {
+                continue;
+            }
+            TimeSpan timeDifference = DateTime.Now - regis.LastHeartbeatTime;
             if (timeDifference.TotalSeconds > (device.HeartbeatInterval * 3))
             {
                 list.Add(device);