diff --git a/IRaCIS.Core.Application/Service/Common/MailService.cs b/IRaCIS.Core.Application/Service/Common/MailService.cs
index 2478f958f..a4f617d26 100644
--- a/IRaCIS.Core.Application/Service/Common/MailService.cs
+++ b/IRaCIS.Core.Application/Service/Common/MailService.cs
@@ -57,7 +57,7 @@ namespace IRaCIS.Application.Services
 
         private readonly SystemEmailSendConfig _systemEmailConfig;
 
-        private  string _companyShortName { get; set; }
+
 
        public MailVerificationService(IRepository<VerificationCode> verificationCodeRepository,
             IRepository<SystemBasicData> systemBasicDatarepository,
@@ -82,10 +82,10 @@ namespace IRaCIS.Application.Services
             _doctorTypeRepository = doctorTypeRepository;
             _distributedLockProvider = distributedLockProvider;
 
-            //_companyShortName = _userInfo.IsEn_Us ? _systemEmailConfig.CompanyShortName : _systemEmailConfig.CompanyShortNameCN;
         }
 
 
+
         private string ReplaceCompanyName(string needDealtxt)
         {
             var str= needDealtxt.Replace("{company}", _userInfo.IsEn_Us ? _systemEmailConfig.CompanyName : _systemEmailConfig.CompanyNameCN)
@@ -107,7 +107,7 @@ namespace IRaCIS.Application.Services
             messageToSend.To.Add(new MailboxAddress(userName, emailAddress));
             //主题
                 //---[来自展影IRC] 关于重置邮箱的提醒
-            messageToSend.Subject = _localizer["Mail_EmailResetReminder", _companyShortName];
+            messageToSend.Subject = _localizer["Mail_EmailResetReminder", _userInfo.IsEn_Us ? _systemEmailConfig.CompanyShortName : _systemEmailConfig.CompanyShortNameCN];
 
             var builder = new BodyBuilder();
 
@@ -173,7 +173,7 @@ namespace IRaCIS.Application.Services
             messageToSend.To.Add(new MailboxAddress(String.Empty, emailAddress));
             //主题
                 //---[来自展影IRC] 关于重置密码的提醒
-            messageToSend.Subject = _localizer["Mail_IRCResettingPassword", _companyShortName];
+            messageToSend.Subject = _localizer["Mail_IRCResettingPassword", _userInfo.IsEn_Us ? _systemEmailConfig.CompanyShortName : _systemEmailConfig.CompanyShortNameCN];
 
 
 
@@ -241,7 +241,7 @@ namespace IRaCIS.Application.Services
             messageToSend.To.Add(new MailboxAddress(String.Empty, emailAddress));
             //主题
                 //---[来自展影IRC]的提醒
-            messageToSend.Subject = _localizer["Mail_ImagingIRCReminder", _companyShortName];
+            messageToSend.Subject = _localizer["Mail_ImagingIRCReminder", _userInfo.IsEn_Us ? _systemEmailConfig.CompanyShortName : _systemEmailConfig.CompanyShortNameCN];
 
 
 
@@ -307,7 +307,7 @@ namespace IRaCIS.Application.Services
             messageToSend.To.Add(new MailboxAddress(String.Empty, emailAddress));
             //主题
             //$"[来自展影IRC] [{researchProgramNo}] 关于中心调研的提醒";
-            messageToSend.Subject = _localizer["Mail_ProjectParticipationReminder", _companyShortName, researchProgramNo];
+            messageToSend.Subject = _localizer["Mail_ProjectParticipationReminder", _userInfo.IsEn_Us ? _systemEmailConfig.CompanyShortName : _systemEmailConfig.CompanyShortNameCN, researchProgramNo];
 
 
 
@@ -387,7 +387,7 @@ namespace IRaCIS.Application.Services
             messageToSend.To.Add(new MailboxAddress(sysUserInfo.FullName, sysUserInfo.EMail));
             //主题
                 //---[来自展影IRC] 关于创建账户的提醒
-            messageToSend.Subject = _localizer["Mail_AccountCreationReminder", _companyShortName];
+            messageToSend.Subject = _localizer["Mail_AccountCreationReminder", _userInfo.IsEn_Us ? _systemEmailConfig.CompanyShortName : _systemEmailConfig.CompanyShortNameCN];
 
 
 
@@ -443,7 +443,7 @@ namespace IRaCIS.Application.Services
             messageToSend.To.Add(new MailboxAddress(sysUserInfo.FullName, sysUserInfo.EMail));
             //主题
                 //---[来自展影IRC] 关于重置账户密码的提醒
-            messageToSend.Subject = _localizer["Mail_AccountPasswordResetReminder", _companyShortName];
+            messageToSend.Subject = _localizer["Mail_AccountPasswordResetReminder", _userInfo.IsEn_Us ? _systemEmailConfig.CompanyShortName : _systemEmailConfig.CompanyShortNameCN];
 
 
 
@@ -493,7 +493,7 @@ namespace IRaCIS.Application.Services
             messageToSend.To.Add(new MailboxAddress(sysUserInfo.FullName, sysUserInfo.EMail));
             //主题
             // $"[来自展影IRC] [{trialInfo.ResearchProgramNo}]邀请信";
-            messageToSend.Subject = _localizer["Mail_InvitationEmail", _companyShortName, trialInfo.ResearchProgramNo];
+            messageToSend.Subject = _localizer["Mail_InvitationEmail", _userInfo.IsEn_Us ? _systemEmailConfig.CompanyShortName : _systemEmailConfig.CompanyShortNameCN, trialInfo.ResearchProgramNo];
 
 
 
@@ -557,7 +557,7 @@ namespace IRaCIS.Application.Services
             messageToSend.To.Add(new MailboxAddress(String.Empty, sysUserInfo.EMail));
             //主题
             // $"[来自展影IRC] [{trialInfo.ResearchProgramNo}]邀请信";
-            messageToSend.Subject = _localizer["Mail_InvitationEmail", _companyShortName,trialInfo.ResearchProgramNo];
+            messageToSend.Subject = _localizer["Mail_InvitationEmail", _userInfo.IsEn_Us ? _systemEmailConfig.CompanyShortName : _systemEmailConfig.CompanyShortNameCN,trialInfo.ResearchProgramNo];
 
 
             var builder = new BodyBuilder();
@@ -672,7 +672,7 @@ namespace IRaCIS.Application.Services
             messageToSend.To.Add(new MailboxAddress(doctor.FullName, doctor.EMail));
             //主题
             // $"[来自展影IRC] [{trialInfo.ResearchProgramNo}]邀请信";
-            messageToSend.Subject = _localizer["Mail_InvitationEmail", _companyShortName, trialInfo.ResearchProgramNo];
+            messageToSend.Subject = _localizer["Mail_InvitationEmail", _userInfo.IsEn_Us ? _systemEmailConfig.CompanyShortName : _systemEmailConfig.CompanyShortNameCN, trialInfo.ResearchProgramNo];
 
 
             var builder = new BodyBuilder();
diff --git a/IRaCIS.Core.Application/Service/SiteSurvey/TrialSiteSurveyService.cs b/IRaCIS.Core.Application/Service/SiteSurvey/TrialSiteSurveyService.cs
index f76a3ec50..7033ada86 100644
--- a/IRaCIS.Core.Application/Service/SiteSurvey/TrialSiteSurveyService.cs
+++ b/IRaCIS.Core.Application/Service/SiteSurvey/TrialSiteSurveyService.cs
@@ -43,7 +43,6 @@ namespace IRaCIS.Core.Application.Contracts
 
         private readonly SystemEmailSendConfig _systemEmailConfig;
 
-        private string _companyShortName { get; set; }
 
         public TrialSiteSurveyService(IRepository<TrialSiteSurvey> trialSiteSurveyRepository, IRepository<TrialUser> trialUserRepository, IRepository<TrialSiteUserSurvey> trialSiteUserSurveyRepository,
             IRepository<User> userRepository, IRepository<TrialSite> trialSiteRepository,
@@ -62,7 +61,6 @@ namespace IRaCIS.Core.Application.Contracts
 
             _systemEmailConfig = systemEmailConfig.CurrentValue;
 
-            _companyShortName = _userInfo.IsEn_Us ? _systemEmailConfig.CompanyShortName : _systemEmailConfig.CompanyShortNameCN;
         }
 
 
@@ -616,7 +614,7 @@ namespace IRaCIS.Core.Application.Contracts
 
             //主题
             // $"[来自展影IRC] [{trialInfo.ResearchProgramNo}] 关于中心调研审批的提醒";
-            messageToSend.Subject = _localizer["TrialSiteSurvey_IRCNotification", _companyShortName, trialInfo.ResearchProgramNo];
+            messageToSend.Subject = _localizer["TrialSiteSurvey_IRCNotification", _userInfo.IsEn_Us ? _systemEmailConfig.CompanyShortName : _systemEmailConfig.CompanyShortNameCN, trialInfo.ResearchProgramNo];
 
             var pathToFile = _hostEnvironment.WebRootPath
                              + Path.DirectorySeparatorChar.ToString()