diff --git a/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs b/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs
index d66dc26b7..c8f7d9249 100644
--- a/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs
+++ b/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs
@@ -991,6 +991,7 @@ namespace IRaCIS.Core.API.Controllers
 
                 if (!fileName.EndsWith(".xlsx", StringComparison.OrdinalIgnoreCase))
                 {
+                    //	 请用提供格式的模板excel上传需要处理的数据
                     throw new BusinessValidationFailedException(StaticData.International("UploadDownLoad_TemplateUploadData"));
                 }
 
@@ -1006,32 +1007,41 @@ namespace IRaCIS.Core.API.Controllers
 
             if (excelList.Any(t => string.IsNullOrWhiteSpace(t.TrialSiteCode) || string.IsNullOrWhiteSpace(t.FirstName) || string.IsNullOrWhiteSpace(t.LastName) || string.IsNullOrWhiteSpace(t.Email) || string.IsNullOrWhiteSpace(t.UserTypeStr)))
             {
+                //请确保Excel中 每一行的 中心编号，姓名，邮箱，用户类型数据记录完整再进行上传
                 throw new BusinessValidationFailedException(StaticData.International("UploadDownLoad_EnsureCompleteData"));
             }
 
             var siteCodeList = excelList.Select(t => t.TrialSiteCode.Trim().ToUpper()).Distinct().ToList();
-             
-            if (_trialSiteRepository.Where(t => t.TrialId==trialId && siteCodeList.Contains(t.TrialSiteCode.ToUpper())).Count() != siteCodeList.Count)
+
+            if (_trialSiteRepository.Where(t => t.TrialId == trialId && siteCodeList.Contains(t.TrialSiteCode.ToUpper())).Count() != siteCodeList.Count)
             {
+                //在项目中未找到该Excel中部分或全部中心
                 throw new BusinessValidationFailedException(StaticData.International("UploadDownLoad_InvalidCenters"));
             }
 
             if (excelList.GroupBy(t => new { t.UserTypeStr, t.Email }).Any(g => g.Count() > 1))
             {
+                //	同一邮箱，同一用户类型，只能生成一个账户,请核查Excel数据
+
                 throw new BusinessValidationFailedException(StaticData.International("UploadDownLoad_CheckDuplicateAccounts"));
             }
 
             if (excelList.Any(t => !t.Email.Contains("@")))
             {
+                //有邮箱不符合邮箱格式,请核查Excel数据
                 throw new BusinessValidationFailedException(StaticData.International("UploadDownLoad_InvalidEmail"));
             }
             var generateUserTypeList = new List<string>() { "CRC", "SR", "CRA" };
 
             if (excelList.Any(t => !generateUserTypeList.Contains(t.UserTypeStr.ToUpper())))
             {
+                //用户类型仅能为 CRC,SR,CRA 请核查Excel数据
                 throw new BusinessValidationFailedException(StaticData.International("UploadDownLoad_InvalidUserType"));
             }
-
+            if (excelList.Count == 0)
+            {
+                throw new BusinessValidationFailedException(StaticData.International("UploadDownLoad_NoValiddata"));
+            }
             //处理好 用户类型  和用户类型枚举
             var sysUserTypeList = _usertypeRepository.Where(t => t.UserTypeEnum == UserTypeEnum.CRA || t.UserTypeEnum == UserTypeEnum.ClinicalResearchCoordinator || t.UserTypeEnum == UserTypeEnum.SR).Select(t => new { UserTypeId = t.Id, t.UserTypeEnum }).ToList();
             var siteList = _trialSiteRepository.Where(t => t.TrialId == trialId && siteCodeList.Contains(t.TrialSiteCode)).Select(t => new { t.TrialSiteCode, t.SiteId }).ToList();
@@ -1061,10 +1071,13 @@ namespace IRaCIS.Core.API.Controllers
                 item.SiteId = siteList.FirstOrDefault(t => t.TrialSiteCode.ToUpper() == item.TrialSiteCode.ToUpper()).SiteId;
             }
 
+
+
             await _trialSiteSurveyService.ImportGenerateAccountAndJoinTrialAsync(trialId, baseUrl, routeUrl, excelList.ToList());
 
             return ResponseOutput.Ok();
 
+
         }
 
 
@@ -1202,15 +1215,15 @@ namespace IRaCIS.Core.API.Controllers
 
         public enum UploadFileType
         {
-            DataUpload=1,
+            DataUpload = 1,
 
-            DataDownload=2,
+            DataDownload = 2,
 
-            EmailAttachment=3,
+            EmailAttachment = 3,
 
-            EmailBodyHtml=4,
+            EmailBodyHtml = 4,
 
-            Other=5
+            Other = 5
         }
 
         /// <summary>
@@ -1225,17 +1238,17 @@ namespace IRaCIS.Core.API.Controllers
             IResponseOutput result = null;
 
             switch (fileType)
-            {   
+            {
                 case UploadFileType.DataUpload:
-                    result= await SingleFileUploadAsync((fileName) => FileStoreHelper.GetSystemFileUploadPath(_hostEnvironment, StaticData.Folder.DataTemplate,fileName));
+                    result = await SingleFileUploadAsync((fileName) => FileStoreHelper.GetSystemFileUploadPath(_hostEnvironment, StaticData.Folder.DataTemplate, fileName));
 
                     break;
                 case UploadFileType.DataDownload:
-                    result= await SingleFileUploadAsync((fileName) => FileStoreHelper.GetSystemFileUploadPath(_hostEnvironment, StaticData.Folder.DataTemplate,fileName));
+                    result = await SingleFileUploadAsync((fileName) => FileStoreHelper.GetSystemFileUploadPath(_hostEnvironment, StaticData.Folder.DataTemplate, fileName));
 
                     break;
                 case UploadFileType.EmailAttachment:
-                    result =   await SingleFileUploadAsync((fileName) => FileStoreHelper.GetSystemFileUploadPath(_hostEnvironment, StaticData.Folder.EmailTemplate, fileName));
+                    result = await SingleFileUploadAsync((fileName) => FileStoreHelper.GetSystemFileUploadPath(_hostEnvironment, StaticData.Folder.EmailTemplate, fileName));
 
                     break;
 
@@ -1245,7 +1258,7 @@ namespace IRaCIS.Core.API.Controllers
 
                 default:
                     result = await SingleFileUploadAsync((fileName) => FileStoreHelper.GetOtherFileUploadPath(_hostEnvironment, StaticData.Folder.TempFile, fileName));
-                    
+
                     break;
             }