diff --git a/IRaCIS.Core.Application/Service/TrialSiteUser/TrialService.cs b/IRaCIS.Core.Application/Service/TrialSiteUser/TrialService.cs
index 76f6cdacc..03cd04a9a 100644
--- a/IRaCIS.Core.Application/Service/TrialSiteUser/TrialService.cs
+++ b/IRaCIS.Core.Application/Service/TrialSiteUser/TrialService.cs
@@ -427,7 +427,8 @@ namespace IRaCIS.Application.Services
                 //}
                 #endregion
 
-
+                await _repository.BatchDeleteAsync<WorkloadDetail>(o => o.Workload.TrialId == trialId);
+                await _repository.BatchDeleteAsync<Workload>(o => o.TrialId == trialId);
 
                 await _repository.BatchDeleteAsync<CheckChallengeDialog>(o => o.SubjectVisit.TrialId == trialId);
                 await _repository.BatchDeleteAsync<ClinicalDataTrialSet>(o => o.TrialId == trialId);
diff --git a/IRaCIS.Core.Domain/Abandon/WorkloadDistribution.cs b/IRaCIS.Core.Domain/Abandon/WorkloadDistribution.cs
index d5972cc07..a071d3f6d 100644
--- a/IRaCIS.Core.Domain/Abandon/WorkloadDistribution.cs
+++ b/IRaCIS.Core.Domain/Abandon/WorkloadDistribution.cs
@@ -58,6 +58,10 @@ namespace IRaCIS.Core.Domain.Models
     [Table("WorkloadDetail")]
     public class WorkloadDetail : Entity
     {
+        [JsonIgnore]
+
+        public Workload Workload { get; set; }
+
         public Guid WorkloadId { get; set; }
         public string OptUserName { get; set; }
         public DateTime OptTime { get; set; } = DateTime.Now;