diff --git a/IRaCIS.Core.Domain/Allocation/VisitTask.cs b/IRaCIS.Core.Domain/Allocation/VisitTask.cs
index 8fd3a53e3..21593c375 100644
--- a/IRaCIS.Core.Domain/Allocation/VisitTask.cs
+++ b/IRaCIS.Core.Domain/Allocation/VisitTask.cs
@@ -424,10 +424,10 @@ namespace IRaCIS.Core.Domain.Models
             }
         }
 
-        public string NotAgreeReason { get; set; }
+        public string NotAgreeReason { get; set; } = string.Empty;
         public string PIAuditNote { get; set; } = string.Empty;
 
-        public string PIAuditImagePath { get; set; }
+        public string PIAuditImagePath { get; set; } = string.Empty;
 
         [NotMapped]
         public List<string> PIAuditImagePathList
diff --git a/IRaCIS.Core.Domain/SQLFile/20230713删除表.sql b/IRaCIS.Core.Domain/SQLFile/20230713删除表.sql
new file mode 100644
index 000000000..20de530f0
--- /dev/null
+++ b/IRaCIS.Core.Domain/SQLFile/20230713删除表.sql
@@ -0,0 +1,61 @@
+--医生相关
+DROP TABLE Attachment;
+DROP TABLE Doctor;
+DROP TABLE Postgraduate;
+DROP TABLE Education;
+DROP TABLE ResearchPublication;
+DROP TABLE TrialExperience;
+DROP TABLE Vacation;
+DROP TABLE DoctorCriterionFile;
+DROP TABLE DoctorDictionary;
+
+
+
+--费用相关
+DROP TABLE ExchangeRate;
+DROP TABLE ReviewerPayInformation;
+DROP TABLE TrialPaymentPrice;
+DROP TABLE PaymentAdjustment;
+DROP TABLE ExchangeRate;
+DROP TABLE RankPrice;
+DROP TABLE TrialRevenuesPrice;
+DROP TABLE TrialRevenuesPriceVerification;
+DROP TABLE VolumeReward;
+
+
+--工作量
+DROP TABLE [Workload];
+DROP TABLE DoctorWorkload;
+
+
+
+
+--入组
+DROP TABLE Enroll;
+DROP TABLE EnrollDetail;
+DROP TABLE EnrollReadingCategory;
+
+
+--分配
+DROP TABLE TaskAllocationRule;
+DROP TABLE TaskConsistentRule;
+DROP TABLE SubjectCanceDoctor;
+DROP TABLE SubjectUser	;
+
+--附加评估
+
+DROP TABLE SubjectCriteriaEvaluation;
+DROP TABLE SubjectCriteriaEvaluationVisitFilter;
+DROP TABLE SubjectCriteriaEvaluationVisitStudyFilter;
+
+
+
+
+
+
+
+
+
+
+
+