diff --git a/v2rayN/v2rayN/Forms/MainForm.cs b/v2rayN/v2rayN/Forms/MainForm.cs
index 9f988b60..20c846d0 100644
--- a/v2rayN/v2rayN/Forms/MainForm.cs
+++ b/v2rayN/v2rayN/Forms/MainForm.cs
@@ -1,8 +1,6 @@
 using System;
 using System.Collections.Generic;
-using System.Drawing;
 using System.IO;
-using System.IO.Compression;
 using System.Text;
 using System.Windows.Forms;
 using v2rayN.Handler;
@@ -11,8 +9,6 @@ using v2rayN.Mode;
 using v2rayN.Base;
 using v2rayN.Tool;
 using System.Diagnostics;
-using v2rayN.Properties;
-using Newtonsoft.Json;
 
 namespace v2rayN.Forms
 {
diff --git a/v2rayN/v2rayN/Handler/MainFormHandler.cs b/v2rayN/v2rayN/Handler/MainFormHandler.cs
index 6e9243d6..e39623d3 100644
--- a/v2rayN/v2rayN/Handler/MainFormHandler.cs
+++ b/v2rayN/v2rayN/Handler/MainFormHandler.cs
@@ -1,13 +1,6 @@
-using Grpc.Core;
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
+using System;
 using System.Drawing;
-using System.Net;
-using System.Net.Sockets;
-using System.Threading;
 using System.Windows.Forms;
-using v2rayN.Base;
 using v2rayN.Mode;
 
 namespace v2rayN.Handler
diff --git a/v2rayN/v2rayN/Handler/QRCodeHelper.cs b/v2rayN/v2rayN/Handler/QRCodeHelper.cs
index a24de2d7..2fc56954 100644
--- a/v2rayN/v2rayN/Handler/QRCodeHelper.cs
+++ b/v2rayN/v2rayN/Handler/QRCodeHelper.cs
@@ -1,6 +1,4 @@
 using System.Drawing;
-using System.Drawing.Imaging;
-using System.IO;
 using ZXing;
 using ZXing.QrCode;
 
diff --git a/v2rayN/v2rayN/Handler/StatisticsHandler.cs b/v2rayN/v2rayN/Handler/StatisticsHandler.cs
index c4117ba4..1a33982b 100644
--- a/v2rayN/v2rayN/Handler/StatisticsHandler.cs
+++ b/v2rayN/v2rayN/Handler/StatisticsHandler.cs
@@ -1,15 +1,12 @@
 using Grpc.Core;
 using System;
 using System.Collections.Generic;
-using System.IO;
 using System.Net;
 using System.Net.Sockets;
 using System.Threading;
 using System.Threading.Tasks;
 using v2rayN.Mode;
-using v2rayN.Properties;
 using v2rayN.Protos.Statistics;
-using v2rayN.Tool;
 
 namespace v2rayN.Handler
 {
diff --git a/v2rayN/v2rayN/HttpProxyHandler/SysProxyHandle.cs b/v2rayN/v2rayN/HttpProxyHandler/SysProxyHandle.cs
index 00c91c14..7c5410ca 100644
--- a/v2rayN/v2rayN/HttpProxyHandler/SysProxyHandle.cs
+++ b/v2rayN/v2rayN/HttpProxyHandler/SysProxyHandle.cs
@@ -4,7 +4,6 @@ using System.Diagnostics;
 using System.IO;
 using System.Text;
 using System.Threading;
-using v2rayN.Base;
 using v2rayN.Mode;
 using v2rayN.Properties;
 using v2rayN.Tool;
diff --git a/v2rayN/v2rayN/Properties/AssemblyInfo.cs b/v2rayN/v2rayN/Properties/AssemblyInfo.cs
index 32fb1a67..37de4210 100644
--- a/v2rayN/v2rayN/Properties/AssemblyInfo.cs
+++ b/v2rayN/v2rayN/Properties/AssemblyInfo.cs
@@ -1,5 +1,4 @@
 using System.Reflection;
-using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
 // 有关程序集的常规信息通过以下
diff --git a/v2rayN/v2rayN/Tool/UI.cs b/v2rayN/v2rayN/Tool/UI.cs
index 267c8366..b6160d34 100644
--- a/v2rayN/v2rayN/Tool/UI.cs
+++ b/v2rayN/v2rayN/Tool/UI.cs
@@ -1,5 +1,4 @@
-using System.Globalization;
-using System.Windows.Forms;
+using System.Windows.Forms;
 
 namespace v2rayN
 {
diff --git a/v2rayN/v2rayUpgrade/Program.cs b/v2rayN/v2rayUpgrade/Program.cs
index 8d8d0633..c7971134 100644
--- a/v2rayN/v2rayUpgrade/Program.cs
+++ b/v2rayN/v2rayUpgrade/Program.cs
@@ -1,7 +1,4 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 using System.Windows.Forms;
 
 namespace v2rayUpgrade
diff --git a/v2rayN/v2rayUpgrade/Properties/AssemblyInfo.cs b/v2rayN/v2rayUpgrade/Properties/AssemblyInfo.cs
index c32abbf1..654bd7b5 100644
--- a/v2rayN/v2rayUpgrade/Properties/AssemblyInfo.cs
+++ b/v2rayN/v2rayUpgrade/Properties/AssemblyInfo.cs
@@ -1,5 +1,4 @@
 using System.Reflection;
-using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
 // 有关程序集的一般信息由以下