diff --git a/ShadowsocksX-NG.xcodeproj/project.pbxproj b/ShadowsocksX-NG.xcodeproj/project.pbxproj
index 7e91e06..6fca147 100755
--- a/ShadowsocksX-NG.xcodeproj/project.pbxproj
+++ b/ShadowsocksX-NG.xcodeproj/project.pbxproj
@@ -38,6 +38,8 @@
 		9B3FFF541D09E2D10019A709 /* proxy_conf_helper in Resources */ = {isa = PBXBuildFile; fileRef = 9B3FFF441D09CD3B0019A709 /* proxy_conf_helper */; };
 		9B9CBCAF1E263B1600FC61AA /* libpcre.1.dylib in Resources */ = {isa = PBXBuildFile; fileRef = 9B9CBCAD1E263A6600FC61AA /* libpcre.1.dylib */; };
 		9B9CBCA61E25E1DB00FC61AA /* KcptunProfile.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9B9CBCA51E25E1DB00FC61AA /* KcptunProfile.swift */; };
+		9B9CBCA81E26312E00FC61AA /* install_kcptun.sh in Resources */ = {isa = PBXBuildFile; fileRef = 9B9CBCA71E26310E00FC61AA /* install_kcptun.sh */; };
+		9B9CBCAA1E2633CB00FC61AA /* kcptun_client in Resources */ = {isa = PBXBuildFile; fileRef = 9B9CBCA91E2633CB00FC61AA /* kcptun_client */; };
 		9BA04B231D23D5A5005AAD7F /* ProxyConfTool.m in Sources */ = {isa = PBXBuildFile; fileRef = 9BA04B221D23D5A5005AAD7F /* ProxyConfTool.m */; };
 		9BA04B261D24044D005AAD7F /* ProxyPreferencesController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9BA04B241D24044D005AAD7F /* ProxyPreferencesController.swift */; };
 		9BB706A71D1B982300551F0E /* SWBApplication.m in Sources */ = {isa = PBXBuildFile; fileRef = 9BB706A51D1B982300551F0E /* SWBApplication.m */; };
@@ -153,6 +155,8 @@
 		9B3FFF511D09DBA20019A709 /* ShadowsocksX-NG-Bridging-Header.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "ShadowsocksX-NG-Bridging-Header.h"; sourceTree = "<group>"; };
 		9B9CBCAD1E263A6600FC61AA /* libpcre.1.dylib */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.dylib"; path = libpcre.1.dylib; sourceTree = "<group>"; };
 		9B9CBCA51E25E1DB00FC61AA /* KcptunProfile.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = KcptunProfile.swift; sourceTree = "<group>"; };
+		9B9CBCA71E26310E00FC61AA /* install_kcptun.sh */ = {isa = PBXFileReference; lastKnownFileType = text.script.sh; path = install_kcptun.sh; sourceTree = "<group>"; };
+		9B9CBCA91E2633CB00FC61AA /* kcptun_client */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.executable"; path = kcptun_client; sourceTree = "<group>"; };
 		9BA04B211D23D5A5005AAD7F /* ProxyConfTool.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ProxyConfTool.h; sourceTree = "<group>"; };
 		9BA04B221D23D5A5005AAD7F /* ProxyConfTool.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ProxyConfTool.m; sourceTree = "<group>"; };
 		9BA04B241D24044D005AAD7F /* ProxyPreferencesController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ProxyPreferencesController.swift; sourceTree = "<group>"; };
@@ -236,6 +240,7 @@
 			isa = PBXGroup;
 			children = (
 				9B9CBCAD1E263A6600FC61AA /* libpcre.1.dylib */,
+				9B9CBCA91E2633CB00FC61AA /* kcptun_client */,
 				08FCA0FE1E24BE1A0070984F /* example-gui-config.json */,
 				C6D4298E1DA75988002A5711 /* install_privoxy.sh */,
 				C6D4298F1DA75988002A5711 /* privoxy */,
@@ -254,6 +259,7 @@
 				9B07EFAA1D048E880052D9DF /* menu_icon_disabled.png */,
 				9B07EFAB1D048E880052D9DF /* menu_icon_disabled@2x.png */,
 				9BEEF0651D04CB8500FC52B3 /* install_ss_local.sh */,
+				9B9CBCA71E26310E00FC61AA /* install_kcptun.sh */,
 				9BEEF0661D04CE8D00FC52B3 /* start_ss_local.sh */,
 				9BEEF0671D04CE9A00FC52B3 /* stop_ss_local.sh */,
 				9BEEF0681D04CFE500FC52B3 /* reload_conf_ss_local.sh */,
@@ -483,6 +489,8 @@
 			buildActionMask = 2147483647;
 			files = (
 				9B9CBCAF1E263B1600FC61AA /* libpcre.1.dylib in Resources */,
+				9B9CBCA81E26312E00FC61AA /* install_kcptun.sh in Resources */,
+				9B9CBCAA1E2633CB00FC61AA /* kcptun_client in Resources */,
 				9BE8FBBF1D0B211600CAFD01 /* libcrypto.1.0.0.dylib in Resources */,
 				9B3FFF541D09E2D10019A709 /* proxy_conf_helper in Resources */,
 				C6E28E951DA79705004F8330 /* HTTPPreferencesWindowController.xib in Resources */,
diff --git a/ShadowsocksX-NG/AppDelegate.swift b/ShadowsocksX-NG/AppDelegate.swift
index f6a0f34..be0ecf8 100755
--- a/ShadowsocksX-NG/AppDelegate.swift
+++ b/ShadowsocksX-NG/AppDelegate.swift
@@ -73,6 +73,7 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserNotificationCenterDele
         
         // Prepare ss-local
         InstallSSLocal()
+        InstallKcptunClient()
         InstallPrivoxy()
         // Prepare defaults
         let defaults = UserDefaults.standard
diff --git a/ShadowsocksX-NG/LaunchAgentUtils.swift b/ShadowsocksX-NG/LaunchAgentUtils.swift
index 54f766c..d31f34c 100644
--- a/ShadowsocksX-NG/LaunchAgentUtils.swift
+++ b/ShadowsocksX-NG/LaunchAgentUtils.swift
@@ -9,6 +9,7 @@
 import Foundation
 
 let SS_LOCAL_VERSION = "2.5.6"
+let KCPTUN_CLIENT_VERSION = "20161222"
 let PRIVOXY_VERSION = "3.0.26.static"
 let APP_SUPPORT_DIR = "/Library/Application Support/ShadowsocksX-NG/"
 let LAUNCH_AGENT_DIR = "/Library/LaunchAgents/"
@@ -128,6 +129,23 @@ func InstallSSLocal() {
     }
 }
 
+func InstallKcptunClient() {
+    let fileMgr = FileManager.default
+    let homeDir = NSHomeDirectory()
+    let appSupportDir = homeDir+APP_SUPPORT_DIR
+    if !fileMgr.fileExists(atPath: appSupportDir + "kcptun_\(KCPTUN_CLIENT_VERSION)/kcptun_client") {
+        let bundle = Bundle.main
+        let installerPath = bundle.path(forResource: "install_kcptun", ofType: "sh")
+        let task = Process.launchedProcess(launchPath: installerPath!, arguments: [""])
+        task.waitUntilExit()
+        if task.terminationStatus == 0 {
+            NSLog("Install kcptun succeeded.")
+        } else {
+            NSLog("Install kcptun failed.")
+        }
+    }
+}
+
 func writeSSLocalConfFile(_ conf:[String:AnyObject]) -> Bool {
     do {
         let filepath = NSHomeDirectory() + APP_SUPPORT_DIR + "ss-local-config.json"
diff --git a/ShadowsocksX-NG/install_kcptun.sh b/ShadowsocksX-NG/install_kcptun.sh
new file mode 100755
index 0000000..efd72f5
--- /dev/null
+++ b/ShadowsocksX-NG/install_kcptun.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+#  install_kcptun.sh
+#  ShadowsocksX-NG
+#
+#  Created by 邱宇舟 on 2017/1/11.
+#  Copyright © 2017年 qiuyuzhou. All rights reserved.
+
+cd `dirname "${BASH_SOURCE[0]}"`
+mkdir -p "$HOME/Library/Application Support/ShadowsocksX-NG/kcptun_20161222"
+cp -f kcptun_client "$HOME/Library/Application Support/ShadowsocksX-NG/kcptun_20161222/"
+rm -f "$HOME/Library/Application Support/ShadowsocksX-NG/kcptun_client"
+ln -s "$HOME/Library/Application Support/ShadowsocksX-NG/kcptun_20161222/kcptun_client" "$HOME/Library/Application Support/ShadowsocksX-NG/kcptun_client"
+
+echo "install kcptun done"
diff --git a/ShadowsocksX-NG/kcptun_client b/ShadowsocksX-NG/kcptun_client
new file mode 100755
index 0000000..af13c85
Binary files /dev/null and b/ShadowsocksX-NG/kcptun_client differ