diff --git a/Src/Asp.Net/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavOneToOne.cs b/Src/Asp.Net/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavOneToOne.cs
index 6ac67dc67..6ed8868af 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavOneToOne.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavOneToOne.cs
@@ -10,7 +10,27 @@ namespace SqlSugar
     {
         private void DeleteOneToOne<TChild>(string name, EntityColumnInfo nav) where TChild : class, new()
         {
-             
+            var parentEntity = _ParentEntity;
+            var parentList = _ParentList.Cast<T>().ToList();
+            var parentColumn = parentEntity.Columns.FirstOrDefault(it => it.PropertyName == nav.Navigat.Name);
+            var parentPkColumn = parentEntity.Columns.FirstOrDefault(it => it.IsPrimarykey);
+            var thisEntity = this._Context.EntityMaintenance.GetEntityInfo<TChild>();
+            EntityColumnInfo thisPkColumn = GetPkColumnByNav(thisEntity, nav);
+            Check.Exception(thisPkColumn == null, $" Navigate {parentEntity.EntityName} : {name} is error ", $"导航实体 {parentEntity.EntityName} 属性 {name} 配置错误");
+ 
+
+            if (!_IsDeletedParant)
+                SetContext(() => this._Context.Deleteable(parentList).ExecuteCommand());
+
+
+            var ids = _ParentList.Select(it => parentColumn.PropertyInfo.GetValue(it)).ToList();
+            List<TChild> childList = this._Context.Queryable<TChild>().In(thisPkColumn.DbColumnName, ids).ToList();
+
+            this._ParentList = childList.Cast<object>().ToList();
+            this._ParentPkColumn = thisPkColumn;
+            this._IsDeletedParant = true;
+
+            SetContext(() => this._Context.Deleteable(childList).ExecuteCommand());
         }
 
     }