diff --git a/Src/Dlhis.ScheduledTask/TaskAssignment/Services/Implements/AssignmentService.cs b/Src/Dlhis.ScheduledTask/TaskAssignment/Services/Implements/AssignmentService.cs
index cd0bb120..63547016 100644
--- a/Src/Dlhis.ScheduledTask/TaskAssignment/Services/Implements/AssignmentService.cs
+++ b/Src/Dlhis.ScheduledTask/TaskAssignment/Services/Implements/AssignmentService.cs
@@ -370,13 +370,10 @@ public class AssignmentService : IAssignmentService
         var deviceNos = data.Select(x => x.DeviceUniqueNo).Distinct().ToList();
         var result = new Dictionary<string, DateTime?>(deviceNos.Count);
 
-        //日志数据最后一条
-        var logInfos = await _dbContext.Queryable<DeviceUploadLogEntity>().Select(x => new
+        var logInfos = await _dbContext.Queryable<DeviceUploadLogEntity>().GroupBy(x => x.DeviceUniqueNo).Select(x => new
         {
-            RowNumber = SqlFunc.RowNumber(SqlFunc.Desc(x.RaiseDateTime), x.DeviceUniqueNo),
-            x.DeviceUniqueNo,
-            x.RaiseDateTime
-        }).MergeTable().Where(x => x.RowNumber == 1).ToListAsync();
+            x.DeviceUniqueNo, RaiseDateTime = SqlFunc.AggregateMax(x.RaiseDateTime)
+        }).ToListAsync();
 
         foreach (var item in deviceNos)
         {