diff --git a/IRaCIS.Core.Application/Service/Reading/Segment/SegmentationService.cs b/IRaCIS.Core.Application/Service/Reading/Segment/SegmentationService.cs
index 8f6274ff8..f1271ad5a 100644
--- a/IRaCIS.Core.Application/Service/Reading/Segment/SegmentationService.cs
+++ b/IRaCIS.Core.Application/Service/Reading/Segment/SegmentationService.cs
@@ -92,26 +92,24 @@ public class SegmentationService(IRepository<Segmentation> _segmentationReposito
     private async Task SaveSegmentationVersionAsync(SaveSegmentationVersionAsyncInDto inDto)
     {
         var data = await _segmentationRepository.FirstOrDefaultNoTrackingAsync(x => x.Id == inDto.SegmentationId);
-
-        var lastVersion=await _segmentationVersionRepository
-            .Where(x => x.SegmentationId == inDto.SegmentationId)
+        // 如果是新增或修改，记录一条版本信息
+        var maxVersion = await _segmentationVersionRepository
+            .Where(x => x.SegmentationId == data.Id)
             .OrderByDescending(x => x.Version)
             .FirstOrDefaultAsync();
 
+        var startTime = maxVersion != null ? maxVersion.CreateTime : data.UpdateTime;
+
         var segmentList = await _segmentRepository
-            .WhereIf(lastVersion!=null,x=>x.CreateTime<= lastVersion.CreateTime)
+            .Where(x=>x.CreateTime<= startTime)
             .Where(x => x.SegmentationId == inDto.SegmentationId).OrderBy(x=>x.SegmentNumber).ProjectTo<SegmentVersionData>(_mapper.ConfigurationProvider).ToListAsync();
 
         if (data.SEGUrl != string.Empty&&(inDto.SEGUrl!=data.SEGUrl||inDto.IsRestore))
         {
-            // 如果是新增或修改，记录一条版本信息
-            var maxVersion = await _segmentationVersionRepository
-                .Where(x => x.SegmentationId == data.Id)
-                .OrderByDescending(x => x.Version)
-                .FirstOrDefaultAsync();
+        
 
             var newVersion = maxVersion == null ? 1 : maxVersion.Version + 1;
-            var startTime = maxVersion != null ? maxVersion.CreateTime : data.UpdateTime ;
+