diff --git a/src/SJZY.Track.Application.Contract/Dtos/TrackContents/EditTrackContentInput.cs b/src/SJZY.Track.Application.Contract/Dtos/TrackContents/EditTrackContentInput.cs
index 22a732ad..141a0bc9 100644
--- a/src/SJZY.Track.Application.Contract/Dtos/TrackContents/EditTrackContentInput.cs
+++ b/src/SJZY.Track.Application.Contract/Dtos/TrackContents/EditTrackContentInput.cs
@@ -25,17 +25,17 @@ public class EditTrackContentInput
     /// <summary>
     /// 轨迹内容代码
     /// </summary>
-    public string Code { get; set; }
+    public string? Code { get; set; }
 
     /// <summary>
     /// 轨迹内容
     /// </summary>
-    public string Content { get; set; }
+    public string? Content { get; set; }
 
     /// <summary>
     /// 轨迹内容英文
     /// </summary>
-    public string EnContent { get; set; }
+    public string? EnContent { get; set; }
 
     /// <summary>
     /// 轨迹标记id