diff --git a/src/SJZY.Track.Application.Contract/Dtos/TrackContents/EditTrackContentInput.cs b/src/SJZY.Track.Application.Contract/Dtos/TrackContents/EditTrackContentInput.cs
index d2a829ca..8a99f816 100644
--- a/src/SJZY.Track.Application.Contract/Dtos/TrackContents/EditTrackContentInput.cs
+++ b/src/SJZY.Track.Application.Contract/Dtos/TrackContents/EditTrackContentInput.cs
@@ -88,7 +88,7 @@
         /// <summary>
         /// 轨迹标记id
         /// </summary>
-        public int TrackFlagId { get; set; }
+        public int? TrackFlagId { get; set; }
 
         /// <summary>
         /// 轨迹标记
diff --git a/src/SJZY.Track.Application/Services/TrackContents/TrackContentService.cs b/src/SJZY.Track.Application/Services/TrackContents/TrackContentService.cs
index 657cc671..9ed8374e 100644
--- a/src/SJZY.Track.Application/Services/TrackContents/TrackContentService.cs
+++ b/src/SJZY.Track.Application/Services/TrackContents/TrackContentService.cs
@@ -59,6 +59,8 @@ public class TrackContentService : ApplicationService
         }
 
         var dto = ObjectMapper.Map<GetTrackContentDetailVO, GetTrackContentDetailDto>(detailInfo);
+
+        if (dto.TrackFlagId == 0) dto.TrackFlagId = null;
         return new UnifyResultDto<GetTrackContentDetailDto>("200", "", dto);
     }