diff --git a/IRaCIS.Core.Application/Service/Document/SystemDocumentService.cs b/IRaCIS.Core.Application/Service/Document/SystemDocumentService.cs
index a3e22f7b9..efea64699 100644
--- a/IRaCIS.Core.Application/Service/Document/SystemDocumentService.cs
+++ b/IRaCIS.Core.Application/Service/Document/SystemDocumentService.cs
@@ -168,7 +168,7 @@ namespace IRaCIS.Core.Application.Services
                         .Where(id => !beforeUserTypeIds.Contains(id))
                         .ToList();
 
-                    if (newUserTypeIds.Any())
+                    if (newUserTypeIds.Any()&& newUserTypeIds.Count()>0)
                     {
                         // 发送邮件给新增的角色
                         Console.WriteLine("开始 发送系统文档更新邮件给新增角色");