diff --git a/src/SJZY.Track.Domain/Dtos/Order/GetPageTrackOrderInputVO.cs b/src/SJZY.Track.Domain/Dtos/Order/GetPageTrackOrderInputVO.cs
index 0d66f479..20589812 100644
--- a/src/SJZY.Track.Domain/Dtos/Order/GetPageTrackOrderInputVO.cs
+++ b/src/SJZY.Track.Domain/Dtos/Order/GetPageTrackOrderInputVO.cs
@@ -68,7 +68,7 @@ namespace SJZY.Track.Domain.Dtos.Order
         /// <summary>
         /// 订单类型名称
         /// </summary>
-        public string OrderTypeName { get; set; }
+        public string? OrderTypeName { get; set; }
 
         /// <summary>
         /// 订单号