diff --git a/MDM/Models/Material/Dto/MaterialListDto.cs b/MDM/Models/Material/Dto/MaterialListDto.cs
index 8e54943..866ab02 100644
--- a/MDM/Models/Material/Dto/MaterialListDto.cs
+++ b/MDM/Models/Material/Dto/MaterialListDto.cs
@@ -23,32 +23,32 @@ namespace MDM.Model.Material.Dto
         [Required(ErrorMessage = "雪花id不能为空")]
         public int Id { get; set; }
 
-        public string FkMaterialTypeCode { get; set; }
+        public string? FkMaterialTypeCode { get; set; }
 
-        public string Name { get; set; }
+        public string? Name { get; set; }
 
         [Required(ErrorMessage = "物料编码不能为空")]
-        public string Code { get; set; }
+        public string? Code { get; set; }
 
-        public string Addcode { get; set; }
+        public string? Addcode { get; set; }
 
-        public string CustomerCode { get; set; }
+        public string? CustomerCode { get; set; }
 
-        public string Color { get; set; }
+        public string? Color { get; set; }
 
-        public string Specification { get; set; }
+        public string? Specification { get; set; }
 
-        public string Unit { get; set; }
+        public string? Unit { get; set; }
 
-        public string Description { get; set; }
+        public string? Description { get; set; }
 
         public int? FkSupplierId { get; set; }
 
-        public string SupplierCode { get; set; }
+        public string? SupplierCode { get; set; }
 
-        public string ExpirationUnit { get; set; }
+        public string? ExpirationUnit { get; set; }
 
-        public decimal ExpirationDate { get; set; }
+        public decimal? ExpirationDate { get; set; }
 
         public int? ShelfLifeWarningDays { get; set; }
 
@@ -58,15 +58,15 @@ namespace MDM.Model.Material.Dto
 
         public DateTime? StopTime { get; set; }
 
-        public string BarCode { get; set; }
+        public string? BarCode { get; set; }
 
         public int? IsBatch { get; set; }
 
-        public string CreatedBy { get; set; }
+        public string? CreatedBy { get; set; }
 
         public DateTime? CreatedTime { get; set; }
 
-        public string UpdatedBy { get; set; }
+        public string? UpdatedBy { get; set; }
 
         public DateTime? UpdatedTime { get; set; }