diff --git a/MDM/Models/Material/Dto/MaterialBomDto.cs b/MDM/Models/Material/Dto/MaterialBomDto.cs
index 0902c24..cef3214 100644
--- a/MDM/Models/Material/Dto/MaterialBomDto.cs
+++ b/MDM/Models/Material/Dto/MaterialBomDto.cs
@@ -18,7 +18,7 @@ namespace MDM.Model.Material.Dto
     public class MaterialBomDto
     {
         [Required(ErrorMessage = "雪花id不能为空")]
-        public int Id { get; set; }
+        public string Id { get; set; }
 
         public string? InvCode { get; set; }
 
diff --git a/MDM/Models/Material/Dto/MaterialListDto.cs b/MDM/Models/Material/Dto/MaterialListDto.cs
index 866ab02..f748cc2 100644
--- a/MDM/Models/Material/Dto/MaterialListDto.cs
+++ b/MDM/Models/Material/Dto/MaterialListDto.cs
@@ -21,7 +21,7 @@ namespace MDM.Model.Material.Dto
     public class MaterialListDto
     {
         [Required(ErrorMessage = "雪花id不能为空")]
-        public int Id { get; set; }
+        public string Id { get; set; }
 
         public string? FkMaterialTypeCode { get; set; }
 
diff --git a/MDM/Models/Material/MaterialBom.cs b/MDM/Models/Material/MaterialBom.cs
index fa10fa6..89b61d5 100644
--- a/MDM/Models/Material/MaterialBom.cs
+++ b/MDM/Models/Material/MaterialBom.cs
@@ -63,7 +63,7 @@ namespace MDM.Model.Material
         /// CreatedTime 
         /// </summary>
         [SugarColumn(ColumnName = "created_time")]
-        public DateTime? CreatedTime { get; set; }
+        public DateTime CreatedTime { get; set; }
 
         /// <summary>
         /// UpdatedBy 
diff --git a/MDM/Services/Material/MaterialBomService.cs b/MDM/Services/Material/MaterialBomService.cs
index c0f57d6..a09c6ed 100644
--- a/MDM/Services/Material/MaterialBomService.cs
+++ b/MDM/Services/Material/MaterialBomService.cs
@@ -68,12 +68,12 @@ namespace MDM.Services.Material
                     Iusequantity = SqlFunc.AggregateMax(it.Iusequantity),
                     BOMVersion = SqlFunc.AggregateMax(it.BOMVersion),
                     CreatedBy = SqlFunc.AggregateMax(it.CreatedBy),
-                    CreatedTime = SqlFunc.AggregateMax(it.CreatedTime),
+                    //CreatedTime = SqlFunc.AggregateMax(it.CreatedTime),
                     UpdatedBy = SqlFunc.AggregateMax(it.UpdatedBy),
                     UpdatedTime = SqlFunc.AggregateMax(it.UpdatedTime)
 
 
-                }).OrderBy("created_time DESC"); // 核心修复：手动指定数据库列名排序;
+                }).OrderBy(it => SqlFunc.AggregateMax(it.CreatedTime), OrderByType.Desc);
             var response = query.ToPage<MaterialBomDto, MaterialBomDto>(parm);
 
 
@@ -157,10 +157,10 @@ namespace MDM.Services.Material
                         //目前没加物料是否正确校验
 
 
-
                         if (currentRow != null && currentRow.GetCell(0) != null) // 确保行不为空
                         {
                             MaterialBom item = new MaterialBom();
+                            item.Id = XueHua;
                             //母件编码
                             if (currentRow.GetCell(0) != null && currentRow.GetCell(0).CellType == CellType.String)
                                 item.InvCode = currentRow.GetCell(0).ToString();
diff --git a/MDM/Services/Material/MaterialListService.cs b/MDM/Services/Material/MaterialListService.cs
index 9c805a1..f16e881 100644
--- a/MDM/Services/Material/MaterialListService.cs
+++ b/MDM/Services/Material/MaterialListService.cs
@@ -109,7 +109,7 @@ namespace MDM.Services.Material
                 try
                 {
                     IWorkbook workbook = new XSSFWorkbook(stream);
-                    ISheet sheet = workbook.GetSheet("物料类型");
+                    ISheet sheet = workbook.GetSheet("物料台账");
                     List<MaterialList> materialLists = new List<MaterialList>();
                     // 遍历每一行
                     for (int row = 1; row <= sheet.LastRowNum; row++)
@@ -118,6 +118,7 @@ namespace MDM.Services.Material
                         if (currentRow != null && currentRow.GetCell(0) != null) // 确保行不为空
                         {
                             MaterialList item = new MaterialList();
+                            item.Id = XueHua;
                             //物料类型code
                             if (currentRow.GetCell(0) != null && currentRow.GetCell(0).CellType == CellType.String)
                                 item.FkMaterialTypeCode = currentRow.GetCell(0).ToString();