diff --git a/MDM/Models/Material/Dto/MaterialBomDto.cs b/MDM/Models/Material/Dto/MaterialBomDto.cs
index f670b7d..a575ff8 100644
--- a/MDM/Models/Material/Dto/MaterialBomDto.cs
+++ b/MDM/Models/Material/Dto/MaterialBomDto.cs
@@ -20,15 +20,15 @@ namespace MDM.Model.Material.Dto
         [Required(ErrorMessage = "雪花id不能为空")]
         public int Id { get; set; }
 
-        public string InvCode { get; set; }
+        public string? InvCode { get; set; }
 
-        public string InvName { get; set; }
+        public string? InvName { get; set; }
 
-        public string SubInvCode { get; set; }
+        public string? SubInvCode { get; set; }
 
-        public string SubInvName { get; set; }
+        public string? SubInvName { get; set; }
 
-        public string Iusequantity { get; set; }
+        public string? Iusequantity { get; set; }
 
         public string? BOMVersion { get; set; }