diff --git a/IRaCIS.Core.Application/Service/Document/DTO/SystemDocumentViewModel.cs b/IRaCIS.Core.Application/Service/Document/DTO/SystemDocumentViewModel.cs
index 451dbb1f5..dd2a41d35 100644
--- a/IRaCIS.Core.Application/Service/Document/DTO/SystemDocumentViewModel.cs
+++ b/IRaCIS.Core.Application/Service/Document/DTO/SystemDocumentViewModel.cs
@@ -35,8 +35,6 @@ namespace IRaCIS.Core.Application.Contracts
         public bool OffLine { get; set; }
 
         public Guid SystemDocumentId { get; set; }
-
-        public DateTime UpdateTime { get; set; }
     }
 
     public class SystemDocumentAttachmentQuery : PageInput
@@ -399,8 +397,6 @@ namespace IRaCIS.Core.Application.Contracts
         public bool OffLine { get; set; }
 
         public Guid TrialDocumentId { get; set; }
-
-        public DateTime UpdateTime { get; set; }
     }
 
     public class TrialDocumentAttachmentQuery : PageInput
diff --git a/IRaCIS.Core.Application/Service/Document/SystemDocumentService.cs b/IRaCIS.Core.Application/Service/Document/SystemDocumentService.cs
index 7f26fd19d..efea64699 100644
--- a/IRaCIS.Core.Application/Service/Document/SystemDocumentService.cs
+++ b/IRaCIS.Core.Application/Service/Document/SystemDocumentService.cs
@@ -60,7 +60,6 @@ namespace IRaCIS.Core.Application.Services
 
 
 
-            addOrEditSystemDocumentAttachment.UpdateTime = DateTime.Now;
             var entity = await _systemDocumentAttachmentRepository.InsertOrUpdateAsync(addOrEditSystemDocumentAttachment, true);
 
             return ResponseOutput.Ok(entity.Id.ToString());
diff --git a/IRaCIS.Core.Application/Service/Document/TrialDocumentService.cs b/IRaCIS.Core.Application/Service/Document/TrialDocumentService.cs
index 7e5197ce2..8a44834a8 100644
--- a/IRaCIS.Core.Application/Service/Document/TrialDocumentService.cs
+++ b/IRaCIS.Core.Application/Service/Document/TrialDocumentService.cs
@@ -72,7 +72,6 @@ namespace IRaCIS.Core.Application.Services
         {
             //  在此处拷贝automapper 映射
 
-            addOrEditTrialDocumentAttachment.UpdateTime = DateTime.Now;
             var entity = await _trialDocumentAttachmentRepository.InsertOrUpdateAsync(addOrEditTrialDocumentAttachment, true);
 
             return ResponseOutput.Ok(entity.Id.ToString());