diff --git a/IRaCIS.Core.Application/Service/Document/DTO/SystemDocumentViewModel.cs b/IRaCIS.Core.Application/Service/Document/DTO/SystemDocumentViewModel.cs
index 2aaec363a..b907b15fa 100644
--- a/IRaCIS.Core.Application/Service/Document/DTO/SystemDocumentViewModel.cs
+++ b/IRaCIS.Core.Application/Service/Document/DTO/SystemDocumentViewModel.cs
@@ -116,8 +116,7 @@ namespace IRaCIS.Core.Application.Contracts
 
     public class UserConfirmCommand
     {
-        public Guid TrialId { get; set; }
-
+    
         [NotDefault]
         public Guid DocumentId { get; set; }
 
diff --git a/IRaCIS.Core.Domain/Trial/TrialSign.cs b/IRaCIS.Core.Domain/Trial/TrialSign.cs
index 5ff1ae69f..e0156cd22 100644
--- a/IRaCIS.Core.Domain/Trial/TrialSign.cs
+++ b/IRaCIS.Core.Domain/Trial/TrialSign.cs
@@ -31,8 +31,7 @@ namespace IRaCIS.Core.Domain.Models
 		/// <summary>
         /// TrialId
         /// </summary>
-		[Required]
-		public Guid TrialId { get; set; }
+		public Guid? TrialId { get; set; }
 	
 		/// <summary>
         /// SubjectVisitId
@@ -41,7 +40,7 @@ namespace IRaCIS.Core.Domain.Models
 
 
 		//关联基础数据
-		public Guid SignCodeId { get; set; }
+		public Guid? SignCodeId { get; set; }
 
 		public string SignCode { get; set; }