diff --git a/IRaCIS.Core.Infra.EFCore/Repository/IRepository.cs b/IRaCIS.Core.Infra.EFCore/Repository/IRepository.cs
index b772400b0..bfedf9a50 100644
--- a/IRaCIS.Core.Infra.EFCore/Repository/IRepository.cs
+++ b/IRaCIS.Core.Infra.EFCore/Repository/IRepository.cs
@@ -11,9 +11,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Linq.Expressions;
 using System.Threading.Tasks;
-using EFCore.BulkExtensions;
 using IRaCIS.Core.Domain.Share;
-using System.Reflection;
 
 namespace IRaCIS.Core.Infra.EFCore
 {
@@ -34,6 +32,14 @@ namespace IRaCIS.Core.Infra.EFCore
 
         Task<bool> AnyAsync<T>(Expression<Func<T, bool>> filter, bool ignoreQueryFilters = false) where T : Entity;
 
+        /// <summary>
+        ///不跟踪  查询单个实体，不会出现NUll
+        /// </summary>
+        /// <param name="exp"></param>
+        /// <param name="ignoreQueryFilters"></param>
+        /// <returns></returns>
+        Task<T> FirstAsync<T>(Expression<Func<T, bool>> exp = null, bool isTracking = false, bool ignoreQueryFilters = false) where T : Entity;
+
         Task<T> FirstOrDefaultAsync<T>(Expression<Func<T, bool>> exp = null, bool ignoreQueryFilters = false) where T : Entity;
         Task<int> CountAsync<T>(Expression<Func<T, bool>> exp = null, bool ignoreQueryFilters = false) where T : Entity;
 
@@ -257,6 +263,34 @@ namespace IRaCIS.Core.Infra.EFCore
             return await query.CountAsync().ConfigureAwait(false);
 
 
+        }
+
+        public async Task<T> FirstAsync<T>(Expression<Func<T, bool>> exp = null, bool isTracking = false, bool ignoreQueryFilters = false) where T : Entity
+        {
+
+            var query = _dbContext.Set<T>().AsQueryable();
+
+            if (!isTracking)
+            {
+                query = query.AsNoTracking();
+            }
+
+            if (ignoreQueryFilters)
+            {
+                query = query.IgnoreQueryFilters();
+            }
+
+            var entity = await query.FirstOrDefaultAsync();
+
+            if (entity is null)
+            {
+                throw new QueryBusinessObjectNotExistException($"The query object {typeof(T).Name} does not exist in database,  Please check the query parameters");
+            }
+            else
+            {
+                return entity;
+            }
+
         }
         public async Task<T> FirstOrDefaultAsync<T>(Expression<Func<T, bool>> exp = null, bool ignoreQueryFilters = false) where T : Entity
         {
@@ -367,9 +401,6 @@ namespace IRaCIS.Core.Infra.EFCore
             return await SaveChangesAsync(autoSave);
         }
 
-
-
-
         #endregion
 
         public async Task<bool> BatchDeleteAsync<T>(Expression<Func<T, bool>> deleteFilter) where T : Entity