diff --git a/IRaCIS.Core.Application/Service/Common/MailService.cs b/IRaCIS.Core.Application/Service/Common/MailService.cs
index 7fac78714..fe3c76e1c 100644
--- a/IRaCIS.Core.Application/Service/Common/MailService.cs
+++ b/IRaCIS.Core.Application/Service/Common/MailService.cs
@@ -318,6 +318,7 @@ namespace IRaCIS.Application.Services
 
 
                 builder.HtmlBody = string.Format(templateInfo,
+                    "",
                 //---您正在参与展影医疗IRC项目中心调研工作
                    _localizer["Mail_CenterResearchReminder"],
                     verificationCode