diff --git a/IRaCIS.Core.Application/Service/TrialSiteUser/TrialService.cs b/IRaCIS.Core.Application/Service/TrialSiteUser/TrialService.cs
index 35a1ba2ae..e9768e61e 100644
--- a/IRaCIS.Core.Application/Service/TrialSiteUser/TrialService.cs
+++ b/IRaCIS.Core.Application/Service/TrialSiteUser/TrialService.cs
@@ -470,6 +470,7 @@ namespace IRaCIS.Core.Application.Service
 
 
                 #region 真项目删除
+                await _repository.BatchDeleteNoTrackingAsync<TrialIdentityUser>(o => o.TrialId == trialId);
                 await _repository.BatchDeleteNoTrackingAsync<CheckChallengeDialog>(o => o.SubjectVisit.TrialId == trialId);
                 await _repository.BatchDeleteNoTrackingAsync<ClinicalDataTrialSet>(o => o.TrialId == trialId);
                 await _repository.BatchDeleteNoTrackingAsync<InspectionFile>(o => o.TrialId == trialId);