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 13a6e3008..26fd511e7 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
@@ -233,7 +233,6 @@ public class ClosedXmlExportImportService : IExportImportService
                     if (property != null)
                     {
                         var propertyType = property.PropertyType;
-
                         if (value.ToString() != "")
                         {
                             if (propertyType.IsEnum)
@@ -264,22 +263,25 @@ public class ClosedXmlExportImportService : IExportImportService
                         }
                         else
                         {
-                            if (propertyType.IsEnum || propertyType.Name == nameof(Boolean) || propertyType.IsValueType)
+                            if (propertyType.IsNullableType() == false)
                             {
-                                /*
-                                 * 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)
+                                if (propertyType.IsEnum || propertyType.Name == nameof(Boolean) || propertyType.IsValueType)
                                 {
-                                    var requiredAttribute = property.GetCustomAttribute<RequiredAttribute>();
-                                    var displayName = property.GetCustomAttribute<DisplayAttribute>()?.Name ?? headerName;
-                                    string errorMessage = string.Format(requiredAttribute.ErrorMessage, displayName);
-                                    validationRresults.Add(new ValidationResult(errorMessage, new string[] { "错误" }));
+                                    /*
+                                     * 枚举、bool、值类型验证 Required 标注
+                                     * 框架中 Required 标注验证不为 NULL，非可空类型必填项无法通过框架方法验证
+                                     */
+                                    var isHasRequiredAttribute = property.HasAttribute<RequiredAttribute>();
+                                    if (isHasRequiredAttribute == true)
+                                    {
+                                        var requiredAttribute = property.GetCustomAttribute<RequiredAttribute>();
+                                        var displayName = property.GetCustomAttribute<DisplayAttribute>()?.Name ?? headerName;
+                                        string errorMessage = string.Format(requiredAttribute.ErrorMessage, displayName);
+                                        validationRresults.Add(new ValidationResult(errorMessage, new string[] { "错误" }));
+                                    }
                                 }
                             }
-                        } 
+                        }
                     }
                 }
                 result.Add(model, validationRresults);