diff --git a/Src/Dlhis.Basic/BusinessShift/Services/Implements/BusinessPlaceShiftService.cs b/Src/Dlhis.Basic/BusinessShift/Services/Implements/BusinessPlaceShiftService.cs
index a7683551..3461d811 100644
--- a/Src/Dlhis.Basic/BusinessShift/Services/Implements/BusinessPlaceShiftService.cs
+++ b/Src/Dlhis.Basic/BusinessShift/Services/Implements/BusinessPlaceShiftService.cs
@@ -89,9 +89,6 @@ public class BusinessPlaceShiftService : IBusinessPlaceShiftService
     public async Task SaveMealShiftsAsync(List<BusinessPlaceShiftSaveMealShiftRequest> requests)
     {
         var shiftCode = requests[0].ShiftCode;
-
-        await _dbContext.Deleteable<BusinessShiftMealRelationshipEntity>().Where(x => x.ShiftCode == shiftCode).ExecuteCommandAsync();
-
         var shift = await CheckExistsShiftAsync(shiftCode);
 
         foreach (var request in requests)
@@ -112,7 +109,10 @@ public class BusinessPlaceShiftService : IBusinessPlaceShiftService
             }
             else
             {
-                var entity = await _dbContext.Queryable<BusinessShiftMealRelationshipEntity>().FirstAsync(x => x.Id == request.Id);
+                var entity = await _dbContext.Queryable<BusinessShiftMealRelationshipEntity>()
+                    .Where(x => x.ShiftCode == shiftCode)
+                    .SingleAsync(x => x.Id == request.Id);
+                
                 entity.ThrowIfNull("餐次段不存在");
 
                 entity.Start = request.TimePeriod.Start.Value;
@@ -258,7 +258,7 @@ public class BusinessPlaceShiftService : IBusinessPlaceShiftService
             .Select(x => new TimePeriod
             {
                 Start = x.Start,
-                End = x.End,
+                End = x.End
             })
             .ToListAsync();
 
@@ -286,7 +286,7 @@ public class BusinessPlaceShiftService : IBusinessPlaceShiftService
 
     private async Task<BusinessShiftEntity> CheckExistsShiftAsync(Guid shiftCode)
     {
-        var shift = await _dbContext.Queryable<BusinessShiftEntity>().Where(x => x.Code == shiftCode).FirstAsync();
+        var shift = await _dbContext.Queryable<BusinessShiftEntity>().Where(x => x.Code == shiftCode).SingleAsync();
         shift.ThrowIfNull("餐次不存在");
 
         return shift;