diff --git a/IRaCIS.Core.Application/Service/QC/QCOperationService.cs b/IRaCIS.Core.Application/Service/QC/QCOperationService.cs
index e9c5e06e0..7969f6488 100644
--- a/IRaCIS.Core.Application/Service/QC/QCOperationService.cs
+++ b/IRaCIS.Core.Application/Service/QC/QCOperationService.cs
@@ -367,7 +367,7 @@ namespace IRaCIS.Core.Application.Image.QA
         [TypeFilter(typeof(TrialResourceFilter))]
         public async Task<IResponseOutput> CRCRequstCheckBack(Guid subjectVisitId)
         {
-            var sv = (await _subjectVisitRepository.FirstOrDefaultAsync(t => t.Id == subjectVisitId)).IfNullThrowException();
+            var sv = (await _subjectVisitRepository.FirstOrDefaultNoTrackingAsync(t => t.Id == subjectVisitId)).IfNullThrowException();
 
 
             if (sv.CheckState == CheckStateEnum.CVPassed)
diff --git a/IRaCIS.Core.Infra.EFCore/Repository/ICommandRepository.cs b/IRaCIS.Core.Infra.EFCore/Repository/ICommandRepository.cs
index 0154e2f6d..21eebb9b4 100644
--- a/IRaCIS.Core.Infra.EFCore/Repository/ICommandRepository.cs
+++ b/IRaCIS.Core.Infra.EFCore/Repository/ICommandRepository.cs
@@ -89,6 +89,8 @@ namespace IRaCIS.Core.Infra.EFCore
 
         Task<TEntity> FirstOrDefaultAsync(Expression<Func<TEntity, bool>> exp = null, bool ignoreQueryFilters = false);
 
+        Task<TEntity> FirstOrDefaultNoTrackingAsync(Expression<Func<TEntity, bool>> exp = null, bool ignoreQueryFilters = false);
+
         Task<bool> AnyAsync(Expression<Func<TEntity, bool>> exp, bool ignoreQueryFilters = false);
 
         Task<TResult> MaxAsync<TResult>(Expression<Func<TEntity, TResult>> selector);
diff --git a/IRaCIS.Core.Infra.EFCore/Repository/Repository.cs b/IRaCIS.Core.Infra.EFCore/Repository/Repository.cs
index 61dce6591..ee47c9f1c 100644
--- a/IRaCIS.Core.Infra.EFCore/Repository/Repository.cs
+++ b/IRaCIS.Core.Infra.EFCore/Repository/Repository.cs
@@ -1412,6 +1412,32 @@ namespace IRaCIS.Core.Infra.EFCore
 
         }
 
+        /// <summary>
+        /// 不跟踪
+        /// </summary>
+        /// <param name="exp"></param>
+        /// <param name="ignoreQueryFilters"></param>
+        /// <returns></returns>
+        public async Task<TEntity> FirstOrDefaultNoTrackingAsync(Expression<Func<TEntity, bool>> exp = null, bool ignoreQueryFilters = false)
+        {
+
+            var query = _dbSet.AsNoTracking().AsQueryable();
+
+            if (ignoreQueryFilters)
+            {
+                query = query.IgnoreQueryFilters();
+            }
+
+
+            if (exp != null)
+            {
+                query = query.Where(exp);
+            }
+
+            return await query.AsNoTracking().FirstOrDefaultAsync().ConfigureAwait(false);
+
+        }
+
         #endregion