diff --git a/be/Modules/Shared/src/Win_in.Sfs.Shared.Application/ExportAndImport/ClosedXmlExportImportService.cs b/be/Modules/Shared/src/Win_in.Sfs.Shared.Application/ExportAndImport/ClosedXmlExportImportService.cs
index 087072235..13a6e3008 100644
--- a/be/Modules/Shared/src/Win_in.Sfs.Shared.Application/ExportAndImport/ClosedXmlExportImportService.cs
+++ b/be/Modules/Shared/src/Win_in.Sfs.Shared.Application/ExportAndImport/ClosedXmlExportImportService.cs
@@ -266,6 +266,10 @@ public class ClosedXmlExportImportService : IExportImportService
                         {
                             if (propertyType.IsEnum || propertyType.Name == nameof(Boolean) || propertyType.IsValueType)
                             {
+                                /*
+                                 * 枚举、bool、值类型验证 Required 标注
+                                 * 框架中 Required 标注验证的是不为 NULL，非可空类型无法通过框架方法验证
+                                 */
                                 var isHasRequiredAttribute = property.HasAttribute<RequiredAttribute>();
                                 if (isHasRequiredAttribute == true)
                                 {