diff --git a/src/SJZY.Track.Application.Contract/Dtos/TrackContents/GetPageTrackContentInput.cs b/src/SJZY.Track.Application.Contract/Dtos/TrackContents/GetPageTrackContentInput.cs
index 9628067c..9f7d68f2 100644
--- a/src/SJZY.Track.Application.Contract/Dtos/TrackContents/GetPageTrackContentInput.cs
+++ b/src/SJZY.Track.Application.Contract/Dtos/TrackContents/GetPageTrackContentInput.cs
@@ -10,7 +10,7 @@
         /// <summary>
         /// 关键字
         /// </summary>        
-        public string Keywords { get; set; } = "";
+        public string? Keywords { get; set; }
     }
 
     public class GetTrackContentListDto
diff --git a/src/SJZY.Track.Application.Contract/Dtos/TrackTemplates/GetPageTrackTemplateInput.cs b/src/SJZY.Track.Application.Contract/Dtos/TrackTemplates/GetPageTrackTemplateInput.cs
index e4e901df..27d3dfc3 100644
--- a/src/SJZY.Track.Application.Contract/Dtos/TrackTemplates/GetPageTrackTemplateInput.cs
+++ b/src/SJZY.Track.Application.Contract/Dtos/TrackTemplates/GetPageTrackTemplateInput.cs
@@ -13,7 +13,7 @@
         /// <summary>
         /// 关键字
         /// </summary>
-        public string Keywords { get; set; } = "";
+        public string? Keywords { get; set; }
 
         ///// <summary>
         ///// 轨迹模版id，轨迹映射的查询使用
diff --git a/src/SJZY.Track.Domain/Dtos/TrackContents/GetPageTrackContentVO.cs b/src/SJZY.Track.Domain/Dtos/TrackContents/GetPageTrackContentVO.cs
index f093836d..4f62c3a9 100644
--- a/src/SJZY.Track.Domain/Dtos/TrackContents/GetPageTrackContentVO.cs
+++ b/src/SJZY.Track.Domain/Dtos/TrackContents/GetPageTrackContentVO.cs
@@ -16,7 +16,7 @@ namespace SJZY.Track.Domain.Dtos.TrackContents
         /// <summary>
         /// 关键字
         /// </summary>
-        public string Keywords { get; set; }
+        public string? Keywords { get; set; }
     }
 
     public class GetTrackContentListVO
diff --git a/src/SJZY.Track.Domain/Dtos/TrackTemplate/GetPageTrackTemplateVO.cs b/src/SJZY.Track.Domain/Dtos/TrackTemplate/GetPageTrackTemplateVO.cs
index 99005db7..35c4fe8a 100644
--- a/src/SJZY.Track.Domain/Dtos/TrackTemplate/GetPageTrackTemplateVO.cs
+++ b/src/SJZY.Track.Domain/Dtos/TrackTemplate/GetPageTrackTemplateVO.cs
@@ -10,7 +10,7 @@ public class GetPageTrackTemplateVO : PageInfoInput
     /// <summary>
     /// 关键字
     /// </summary>
-    public string Keywords { get; set; }
+    public string? Keywords { get; set; }
 
     /// 选中的轨迹模版id
     /// </summary>