diff --git a/Service/AlarmService.cs b/Service/AlarmService.cs
index 630431a..8546958 100644
--- a/Service/AlarmService.cs
+++ b/Service/AlarmService.cs
@@ -380,7 +380,7 @@ namespace LY.App.Service
                 .WhereIF(input.strartDate.HasValue, st => st.CreateTime >= input.strartDate.Value)
                 .WhereIF(input.endDate.HasValue, st => st.CreateTime <= input.endDate.Value.AddDays(1))
                 .OrderBy(s => s.BatchId, OrderByType.Desc)
-                .GroupBy(s => new { s.BatchId, s.serial_number, s.device_type, s.positionId, s.PostionName, s.freq })
+                .GroupBy(s => new { s.BatchId, s.serial_number, s.device_type })
                 .Select(st => new AlarmRepDto
                 {
                     batchId = st.BatchId.ToString(),
@@ -390,10 +390,22 @@ namespace LY.App.Service
                     Frequency = SqlFunc.AggregateMax(st.freq),
                     duration = (SqlFunc.AggregateMax(st.CreateTime) - SqlFunc.AggregateMin(st.CreateTime)).TotalSeconds,
                     model = st.device_type,
-                    positionId = st.positionId,
-                    positionName = st.PostionName
+                    positionId = SqlFunc.AggregateMax(st.positionId),
                 }).MergeTable()//合并查询
                 .ToPageListAsync(input.pageNum, input.pageSize, total);
+            var ids= items.Select(s => s.positionId).Distinct().ToList();
+            var positionNames = await _db.Queryable<PositionInfo>()
+               .Where(s => ids.Contains(s.Id))
+               .Select(s => new { s.Id, s.Name })
+               .ToListAsync();
+            foreach (var item in items)
+            {
+                var positionName = positionNames.FirstOrDefault(s => s.Id == item.positionId)?.Name;
+                if (!string.IsNullOrEmpty(positionName))
+                {
+                    item.positionName = positionName;
+                }
+            }
             return Tuple.Create(total.Value, items);
         }