diff --git a/Src/Asp.Net/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavProvider.cs b/Src/Asp.Net/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavProvider.cs
index 98671784a..08fb15af4 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavProvider.cs
@@ -7,35 +7,19 @@ using System.Threading.Tasks;
 
 namespace SqlSugar 
 {
-    public class DeleteNavProvider<Root,T>
+    public class DeleteNavProvider<Root, T> where T : class, new() where Root : class, new()
     {
+        public SqlSugarProvider _Context { get; internal set; }
 
-        public List<Root> Roots { get;  set; }
-        public SqlSugarProvider Context { get; internal set; }
-
-        public DeleteNavProvider<Root,TChild> ThenInclude<TChild>(Expression<Func<T,TChild>> expression)
+        public DeleteNavTask<Root, TChild> ThenInclude< TChild>(Expression<Func<Root, TChild>> expression)
+            where TChild : class, new()
         {
-            throw new Exception("开发中7月15号之前上线");
+            throw new NotImplementedException();
         }
-        public DeleteNavProvider<Root, TChild>  Include<TChild>(Expression<Func<T, TChild>> expression)
+        public DeleteNavTask<Root, TChild> ThenInclude<TChild>(Expression<Func<Root, List<TChild>>> expression)
+         where TChild : class, new()
         {
-            throw new Exception("开发中7月15号之前上线");
-        }
-        public DeleteNavProvider<Root, TChild> ThenInclude<TChild>(Expression<Func<T, List<TChild>>> expression)
-        {
-            throw new Exception("开发中7月15号之前上线");
-        }
-        public DeleteNavProvider<Root, TChild> Include<TChild>(Expression<Func<T, List<TChild>>> expression)
-        {
-            throw new Exception("开发中7月15号之前上线");
-        }
-        private DeleteNavProvider<Root,Root> AsNav()
-        {
-            throw new Exception("开发中7月15号之前上线");
-        }
-        public bool ExecuteCommand() 
-        {
-            return true;
+            throw new NotImplementedException();
         }
     }
 }
diff --git a/Src/Asp.Net/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavTask.cs b/Src/Asp.Net/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavTask.cs
new file mode 100644
index 000000000..1122b6508
--- /dev/null
+++ b/Src/Asp.Net/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavTask.cs
@@ -0,0 +1,98 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SqlSugar 
+{
+    public class DeleteNavTaskInit<Root,T> where T : class, new() where Root : class, new()
+    {
+        public List<T> Roots { get;   set; }
+        internal SqlSugarProvider Context { get; set; }
+        internal DeleteNavProvider<Root, Root> deleteNavProvider { get; set; }
+
+        public DeleteNavTask<Root, TChild> Include<TChild>(Expression<Func<Root, TChild>> expression) where TChild : class, new()
+        {
+            this.Context = deleteNavProvider._Context;
+            DeleteNavTask<Root, TChild> result = new DeleteNavTask<Root, TChild>();
+            Func<DeleteNavTask<Root, TChild>> func = () => deleteNavProvider.ThenInclude(expression);
+            result.PreFunc = func;
+            result.Context = this.Context;
+            return result;
+        }
+        public DeleteNavTask<Root, TChild> Include<TChild>(Expression<Func<Root, List<TChild>>> expression) where TChild : class, new()
+        {
+            this.Context = deleteNavProvider._Context;
+            DeleteNavTask<Root, TChild> result = new DeleteNavTask<Root, TChild>();
+            Func<DeleteNavTask<Root, TChild>> func = () => deleteNavProvider.ThenInclude(expression);
+            result.PreFunc = func;
+            result.Context = this.Context;
+            return result;
+        }
+    }
+    public class DeleteNavTask<Root, T> where T : class, new() where Root : class, new()
+    {
+        public SqlSugarProvider Context { get; set; }
+        public Func<DeleteNavTask<Root, T>> PreFunc { get; set; }
+        public DeleteNavTask<Root, TChild> ThenInclude<TChild>(Expression<Func<T, TChild>> expression) where TChild : class, new()
+        {
+            DeleteNavTask<Root, TChild> result = new DeleteNavTask<Root, TChild>();
+            Func<DeleteNavTask<Root, TChild>> func = () => PreFunc().ThenInclude(expression);
+            result.PreFunc = func;
+            result.Context = this.Context;
+            return result;
+        }
+        public DeleteNavTask<Root, TChild> ThenInclude<TChild>(Expression<Func<T, List<TChild>>> expression) where TChild : class, new()
+        {
+            DeleteNavTask<Root, TChild> result = new DeleteNavTask<Root, TChild>();
+            Func<DeleteNavTask<Root, TChild>> func = () => PreFunc().ThenInclude(expression);
+            result.PreFunc = func;
+            result.Context = this.Context;
+            return result;
+        }
+        public DeleteNavTask<Root, TChild> Include<TChild>(Expression<Func<Root, TChild>> expression) where TChild : class, new()
+        {
+            return AsNav().ThenInclude(expression);
+        }
+        public DeleteNavTask<Root, TChild> Include<TChild>(Expression<Func<Root, List<TChild>>> expression) where TChild : class, new()
+        {
+            return AsNav().ThenInclude(expression);
+        }
+        public bool ExecuteCommand()
+        {
+            var hasTran = this.Context.Ado.Transaction != null;
+            if (hasTran)
+            {
+                PreFunc();
+            }
+            else
+            {
+                this.Context.Ado.UseTran(() =>
+                {
+                    PreFunc();
+                }, ex => throw ex);
+            }
+            return true;
+        }
+        public async Task<bool> ExecuteCommandAsync()
+        {
+            await Task.Run(async () =>
+            {
+                ExecuteCommand();
+                await Task.Delay(0);
+            });
+            return true;
+        }
+
+        private DeleteNavTask<Root, Root> AsNav()
+        {
+            DeleteNavTask<Root, Root> result = new DeleteNavTask<Root, Root>();
+            Func<DeleteNavTask<Root, Root>> func = () => PreFunc().AsNav();
+            result.PreFunc = func;
+            result.Context = this.Context;
+            return result;
+        }
+    }
+}
diff --git a/Src/Asp.Net/SqlSugar/Abstract/SugarProvider/SqlSugarProvider.cs b/Src/Asp.Net/SqlSugar/Abstract/SugarProvider/SqlSugarProvider.cs
index c6c46e5b8..bfc15ecba 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/SugarProvider/SqlSugarProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/SugarProvider/SqlSugarProvider.cs
@@ -903,17 +903,21 @@ namespace SqlSugar
             result.insertNavProvider = provider;
             return result;
         }
-        public DeleteNavProvider<T, T> DeleteNav<T>(T data)
+        public DeleteNavTaskInit<T, T> DeleteNav<T>(T data) where T : class, new()
         {
             return DeleteNav(new List<T>() { data });
         }
-        public DeleteNavProvider<T, T> DeleteNav<T>(List<T> datas)
+        public DeleteNavTaskInit<T, T> DeleteNav<T>(List<T> datas) where T : class, new()
         {
-            var result = new DeleteNavProvider<T, T>();
+            var result = new DeleteNavTaskInit<T, T>();
             result.Roots = datas;
             result.Context = this;
             return result;
         }
+        public DeleteNavTaskInit<T, T> DeleteNav<T>(Expression<Func<T, bool>> whereExpression) where T : class, new() 
+        {
+            return DeleteNav(this.Queryable<T>().Where(whereExpression).ToList());
+        }
         public UpdateNavProvider<T, T> UpdateNav<T>(T data)
         {
             return UpdateNav(new List<T>() { data });
diff --git a/Src/Asp.Net/SqlSugar/Abstract/SugarProvider/SqlSugarScopeProvider.cs b/Src/Asp.Net/SqlSugar/Abstract/SugarProvider/SqlSugarScopeProvider.cs
index bc43beeec..5351c2f87 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/SugarProvider/SqlSugarScopeProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/SugarProvider/SqlSugarScopeProvider.cs
@@ -686,14 +686,18 @@ namespace SqlSugar
         {
             return ScopedContext.InsertNav(datas);
         }
-        public DeleteNavProvider<T, T> DeleteNav<T>(T data)
+        public DeleteNavTaskInit<T, T> DeleteNav<T>(T data) where T : class, new()
         {
             return ScopedContext.DeleteNav(data);
         }
-        public DeleteNavProvider<T, T> DeleteNav<T>(List<T> datas)
+        public DeleteNavTaskInit<T, T> DeleteNav<T>(List<T> datas) where T : class, new()
         {
             return ScopedContext.DeleteNav(datas);
         }
+        public DeleteNavTaskInit<T, T> DeleteNav<T>(Expression<Func<T, bool>> whereExpression) where T : class, new()
+        {
+            return ScopedContext.DeleteNav(whereExpression);
+        }
         public UpdateNavProvider<T, T> UpdateNav<T>(T data)
         {
             return ScopedContext.UpdateNav(data);
diff --git a/Src/Asp.Net/SqlSugar/Interface/ISqlSugarClient.cs b/Src/Asp.Net/SqlSugar/Interface/ISqlSugarClient.cs
index a64f8c06b..d6adad96b 100644
--- a/Src/Asp.Net/SqlSugar/Interface/ISqlSugarClient.cs
+++ b/Src/Asp.Net/SqlSugar/Interface/ISqlSugarClient.cs
@@ -205,8 +205,9 @@ namespace SqlSugar
         #region  Nav CUD
         InsertNavTaskInit<T, T> InsertNav<T>(T data) where T : class, new();
         InsertNavTaskInit<T, T> InsertNav<T>(List<T> datas) where T : class, new();
-        DeleteNavProvider<T, T> DeleteNav<T>(T data);
-        DeleteNavProvider<T, T> DeleteNav<T>(List<T> datas);
+        DeleteNavTaskInit<T, T> DeleteNav<T>(T data) where T : class, new();
+        DeleteNavTaskInit<T, T> DeleteNav<T>(List<T> datas) where T : class, new();
+        DeleteNavTaskInit<T, T> DeleteNav<T>(Expression<Func<T,bool>> whereExpression) where T : class, new();
         UpdateNavProvider<T, T> UpdateNav<T>(T data);
         UpdateNavProvider<T, T> UpdateNav<T>(List<T> datas);
         #endregion
diff --git a/Src/Asp.Net/SqlSugar/SqlSugar.csproj b/Src/Asp.Net/SqlSugar/SqlSugar.csproj
index 688089e54..594043638 100644
--- a/Src/Asp.Net/SqlSugar/SqlSugar.csproj
+++ b/Src/Asp.Net/SqlSugar/SqlSugar.csproj
@@ -89,11 +89,12 @@
     <Compile Include="Abstract\DeleteProvider\SplitTableDeleteByObjectProvider.cs" />
     <Compile Include="Abstract\DeleteProvider\SplitTableDeleteProvider.cs" />
     <Compile Include="Abstract\EntityMaintenance\EntityMaintenance.cs" />
+    <Compile Include="Abstract\ExecuteNavProvider\DeleteNavProvider.cs" />
     <Compile Include="Abstract\ExecuteNavProvider\InsertNavProviderHelper.cs" />
     <Compile Include="Abstract\ExecuteNavProvider\InsertNavProviderOneToMany.cs" />
     <Compile Include="Abstract\ExecuteNavProvider\InsertNavProviderManyToMany.cs" />
     <Compile Include="Abstract\ExecuteNavProvider\InsertNavProviderOneToOne.cs" />
-    <Compile Include="Abstract\ExecuteNavProvider\DeleteNavProvider.cs" />
+    <Compile Include="Abstract\ExecuteNavProvider\DeleteNavTask.cs" />
     <Compile Include="Abstract\ExecuteNavProvider\InsertNavTask.cs" />
     <Compile Include="Abstract\ExecuteNavProvider\UpdateInsert.cs" />
     <Compile Include="Abstract\ExecuteNavProvider\InsertNavProvider.cs" />
diff --git a/Src/Asp.Net/SqlSugar/SqlSugarClient.cs b/Src/Asp.Net/SqlSugar/SqlSugarClient.cs
index f97a8876b..71b105068 100644
--- a/Src/Asp.Net/SqlSugar/SqlSugarClient.cs
+++ b/Src/Asp.Net/SqlSugar/SqlSugarClient.cs
@@ -162,14 +162,18 @@ namespace SqlSugar
         {
             return this.Context.InsertNav(datas);
         }
-        public DeleteNavProvider<T, T> DeleteNav<T>(T data)
+        public DeleteNavTaskInit<T, T> DeleteNav<T>(T data) where T : class, new()
         {
             return this.Context.DeleteNav(data);
         }
-        public DeleteNavProvider<T, T> DeleteNav<T>(List<T> datas)
+        public DeleteNavTaskInit<T, T> DeleteNav<T>(List<T> datas) where T : class, new()
         {
             return this.Context.DeleteNav(datas);
         }
+        public DeleteNavTaskInit<T, T> DeleteNav<T>(Expression<Func<T, bool>> whereExpression) where T : class, new()
+        {
+            return  this.Context.DeleteNav(whereExpression);
+        }
         public UpdateNavProvider<T, T> UpdateNav<T>(T data)
         {
             return this.Context.UpdateNav(data);
diff --git a/Src/Asp.Net/SqlSugar/SqlSugarScope.cs b/Src/Asp.Net/SqlSugar/SqlSugarScope.cs
index aa0772e81..e4cd6924b 100644
--- a/Src/Asp.Net/SqlSugar/SqlSugarScope.cs
+++ b/Src/Asp.Net/SqlSugar/SqlSugarScope.cs
@@ -742,14 +742,18 @@ namespace SqlSugar
         {
             return ScopedContext.InsertNav(datas);
         }
-        public DeleteNavProvider<T, T> DeleteNav<T>(T data)
+        public DeleteNavTaskInit<T, T> DeleteNav<T>(T data) where T : class, new()
         {
             return ScopedContext.DeleteNav(data);
         }
-        public DeleteNavProvider<T, T> DeleteNav<T>(List<T> datas)
+        public DeleteNavTaskInit<T, T> DeleteNav<T>(List<T> datas) where T : class, new()
         {
             return ScopedContext.DeleteNav(datas);
         }
+        public DeleteNavTaskInit<T, T> DeleteNav<T>(Expression<Func<T, bool>> whereExpression) where T : class, new()
+        {
+            return ScopedContext.DeleteNav(whereExpression);
+        }
         public UpdateNavProvider<T, T> UpdateNav<T>(T data)
         {
             return ScopedContext.UpdateNav(data);