diff --git a/IRaCIS.Core.Application/Service/Document/TrialEmailNoticeConfigService.cs b/IRaCIS.Core.Application/Service/Document/TrialEmailNoticeConfigService.cs
index 39963c397..3b7b7b78a 100644
--- a/IRaCIS.Core.Application/Service/Document/TrialEmailNoticeConfigService.cs
+++ b/IRaCIS.Core.Application/Service/Document/TrialEmailNoticeConfigService.cs
@@ -775,7 +775,7 @@ namespace IRaCIS.Core.Application.Service
                 //先预先生成了邮件，发送预先生成的邮件
                 sendEmailConfig.EmailAttachMentConfigList.Add(new EmailAttachMentConfig()
                 {
-                    FileName = $"{taskInfo.SubjectCode}_{emailConfig.FileName}",
+                    FileName = $"{taskInfo.SubjectCode}_{Path.GetFileNameWithoutExtension(emailConfig.FileName)}.pdf",
 
                     FileStream = File.OpenRead(phyPath),
                 });
@@ -843,7 +843,7 @@ namespace IRaCIS.Core.Application.Service
 
                 sendEmailConfig.EmailAttachMentConfigList.Add(new EmailAttachMentConfig()
                 {
-                    FileName = $"{taskInfo.SubjectCode}_{emailConfig.FileName}",
+                    FileName = $"{taskInfo.SubjectCode}_{Path.GetFileNameWithoutExtension(emailConfig.FileName)}.pdf",
 
                     FileStream = pdfMemoryStream
                 });