diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableExecuteSql.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableExecuteSql.cs
index 47f5b4727..1a9aa5a54 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableExecuteSql.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableExecuteSql.cs
@@ -244,7 +244,18 @@ namespace SqlSugar
             var list = this.ToList();
             return GetChildList(parentIdExpression, pk, list, primaryKeyValue, isContainOneself);
         }
-
+        public List<T> ToChildList(Expression<Func<T, object>> parentIdExpression, object [] primaryKeyValues, bool isContainOneself = true)
+        {
+            var entity = this.Context.EntityMaintenance.GetEntityInfo<T>();
+            var pk = GetTreeKey(entity);
+            var list = this.ToList();
+            List<T> result = new List<T>();
+            foreach (var item in primaryKeyValues)
+            {
+                result.AddRange(GetChildList(parentIdExpression, pk, list, item, isContainOneself));
+            }
+            return result;
+        }
         public List<T> ToParentList(Expression<Func<T, object>> parentIdExpression, object primaryKeyValue)
         {
             var entity = this.Context.EntityMaintenance.GetEntityInfo<T>();
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableExecuteSqlAsync.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableExecuteSqlAsync.cs
index 02202f5bf..4e48d6d06 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableExecuteSqlAsync.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableExecuteSqlAsync.cs
@@ -675,7 +675,18 @@ ParameterT parameter)
             return GetChildList(parentIdExpression, pk, list, primaryKeyValue, isContainOneself);
         }
 
-
+        public async Task<List<T>> ToChildListAsync(Expression<Func<T, object>> parentIdExpression, object[] primaryKeyValues, bool isContainOneself = true)
+        {
+            var entity = this.Context.EntityMaintenance.GetEntityInfo<T>();
+            var pk = GetTreeKey(entity);
+            var list =await this.ToListAsync();
+            List<T> result = new List<T>();
+            foreach (var item in primaryKeyValues)
+            {
+                result.AddRange(GetChildList(parentIdExpression, pk, list, item, isContainOneself));
+            }
+            return result;
+        }
         public Task<int> IntoTableAsync<TableEntityType>(CancellationToken cancellationToken = default)
         {
             return IntoTableAsync(typeof(TableEntityType), cancellationToken);
diff --git a/Src/Asp.NetCore2/SqlSugar/Interface/IQueryable.cs b/Src/Asp.NetCore2/SqlSugar/Interface/IQueryable.cs
index 408a07a29..f0b86d691 100644
--- a/Src/Asp.NetCore2/SqlSugar/Interface/IQueryable.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Interface/IQueryable.cs
@@ -220,7 +220,9 @@ namespace SqlSugar
         KeyValuePair<string, List<SugarParameter>> ToSql();
         string ToSqlString();
         List<T> ToChildList(Expression<Func<T, object>> parentIdExpression, object primaryKeyValue, bool isContainOneself = true);
+        List<T> ToChildList(Expression<Func<T, object>> parentIdExpression, object[] primaryKeyValues, bool isContainOneself = true);
         Task<List<T>> ToChildListAsync(Expression<Func<T, object>> parentIdExpression, object primaryKeyValue, bool isContainOneself = true);
+        Task<List<T>> ToChildListAsync(Expression<Func<T, object>> parentIdExpression, object[] primaryKeyValues, bool isContainOneself = true);
         List<T> ToParentList(Expression<Func<T, object>> parentIdExpression, object primaryKeyValue);
         List<T> ToParentList(Expression<Func<T, object>> parentIdExpression, object primaryKeyValue, Expression<Func<T, bool>> parentWhereExpression);