diff --git a/install/ajax.php b/install/ajax.php
new file mode 100644
index 0000000..a0d9848
--- /dev/null
+++ b/install/ajax.php
@@ -0,0 +1,99 @@
+<?php
+// --------
+// 	如果你能在浏览器中看到本句话，则证明你没有安装好PHP运行环境。请先安装好PHP运行环境
+// --------
+ini_set("display_errors", "Off");
+error_reporting(E_ALL | E_STRICT);
+header("Content-type: text/html; charset=utf-8"); 
+include("common.php");
+if(file_exists('./install.lock') && $f = file_get_contents("./install.lock")){
+	ajax_out(L("lock"),10099);
+}
+
+if(!new_is_writeable("./")){
+	ajax_out(L("not_writable_install"),10098);
+}
+
+if(!new_is_writeable("../Public/Uploads")){
+	ajax_out(L("not_writable_upload"),10098);
+}
+
+
+if(!new_is_writeable("../server/Application/Runtime")){
+    ajax_out(L("not_writable_server_runtime"),10095);
+}
+
+
+if(!new_is_writeable("../server/Application/Home/Conf/config.php")){
+	ajax_out(L("not_writable_home_config"),10098);
+}
+
+
+$db_type = $_POST["db_type"] ?  $_POST["db_type"] :"sqlite";
+if ($db_type == "sqlite") {
+	if(!new_is_writeable("../Sqlite")){
+		ajax_out(L("not_writable_sqlite"),10097);
+	}
+
+	if(!new_is_writeable("../Sqlite/showdoc.db.php")){
+		ajax_out(L("not_writable_sqlite_db"),10096);
+	}
+    user_sqlite();
+}
+elseif ($db_type == "mysql") {
+    //showdoc不再支持mysql http://www.showdoc.cc/help?page_id=31990
+}
+function user_sqlite(){
+        clear_runtime();//清除缓存
+        write_js_lang();
+        
+        $ret = write_home_config();
+        if ($ret) {
+        	file_put_contents("./install.lock","https://www.showdoc.cc/");
+            ajax_out(L("install_success"));
+        }else{
+            ajax_out(L("not_writable_home_config"),10001);
+        }
+}
+
+
+function write_home_config(){
+	$lang = $_REQUEST['lang'] ? $_REQUEST['lang'] :"zh";
+	if ($lang == 'en') {
+		$DEFAULT_LANG = 'en-us';
+	}else{
+		$DEFAULT_LANG = 'zh-cn';
+	}
+        $config = "<?php ";
+        $config .= "
+return array(
+	//'配置项'=>'配置值'
+    'DB_TYPE'   => 'Sqlite', 
+    'DB_NAME'   => './Sqlite/showdoc.db.php', 
+    'LANG_SWITCH_ON' => true,   // 开启语言包功能
+    'LANG_AUTO_DETECT' => false, // 自动侦测语言 开启多语言功能后有效
+    'DEFAULT_LANG' => '{$DEFAULT_LANG}', // 默认语言
+    'LANG_LIST'        => 'zh-cn,en-us', // 允许切换的语言列表 用逗号分隔
+    'VAR_LANGUAGE'     => 'l', // 默认语言切换变量
+);";
+
+	$ret = file_put_contents("../server/Application/Home/Conf/config.php", $config);
+    return $ret ;
+}
+
+function write_js_lang(){
+    $lang = $_REQUEST['lang'] ? $_REQUEST['lang'] :"zh";
+    if ($lang == 'en') {
+       replace_file_content("../web/index.html","zh-cn","en") ;
+       replace_file_content("../web_src/index.html","zh-cn","en") ;
+    }
+    
+}
+
+function replace_file_content($file , $from ,$to ){
+    $content = file_get_contents($file);
+    $content2 = str_replace($from,$to,$content);
+    if ($content2) {
+        file_put_contents($file,$content2);
+    }
+}
diff --git a/install/common.php b/install/common.php
new file mode 100644
index 0000000..1f21e53
--- /dev/null
+++ b/install/common.php
@@ -0,0 +1,78 @@
+<?php
+
+/**
+ * 判断语言
+ */
+
+function lang(){
+  $lang = $_REQUEST['lang'] ? $_REQUEST['lang'] :"zh";
+  if ($lang == 'zh-CN') {
+    $lang = "zh";
+  }
+  return include("lang.".$lang.".php");
+}
+
+
+function L($field){
+  if (!isset($GLOBALS['lang'])) {
+      $GLOBALS['lang'] = lang();
+  }
+  return $GLOBALS['lang'][$field] ;
+}
+
+/**
+ * 判断 文件/目录 是否可写（取代系统自带的 is_writeable 函数）
+ *
+ * @param string $file 文件/目录
+ * @return boolean
+ */
+function new_is_writeable($file) {
+  if (is_dir($file)){
+    $dir = $file;
+    if ($fp = @fopen("$dir/test.txt", 'w')) {
+      @fclose($fp);
+      @unlink("$dir/test.txt");
+      $writeable = 1;
+    } else {
+      $writeable = 0;
+    }
+  } else {
+    if ($fp = @fopen($file, 'a+')) {
+      @fclose($fp);
+      $writeable = 1;
+    } else {
+      $writeable = 0;
+    }
+  }
+
+  return $writeable;
+}
+
+function clear_runtime($path = "../server/Application/Runtime"){  
+    //给定的目录不是一个文件夹  
+    if(!is_dir($path)){  
+        return null;  
+    }  
+  
+    $fh = opendir($path);  
+    while(($row = readdir($fh)) !== false){  
+        //过滤掉虚拟目录  
+        if($row == '.' || $row == '..'|| $row == 'index.html'){  
+            continue;  
+        }  
+  
+        if(!is_dir($path.'/'.$row)){
+            unlink($path.'/'.$row);  
+        }  
+        clear_runtime($path.'/'.$row);  
+          
+    }  
+    //关闭目录句柄，否则出Permission denied  
+    closedir($fh);    
+    return true;  
+} 
+
+function ajax_out($message,$error_code = 0){
+        echo json_encode(array("error_code"=>$error_code,"message"=>$message));
+        exit();
+}
\ No newline at end of file
diff --git a/install/database.php b/install/database.php
new file mode 100644
index 0000000..7a4f240
--- /dev/null
+++ b/install/database.php
@@ -0,0 +1,212 @@
+<?php
+// ShowDoc安装脚本
+// install Showdoc
+// 
+// --------
+// 	如果你能在浏览器中看到本句话，则证明你没有安装好PHP运行环境。请先安装好PHP运行环境
+// --------
+include("common.php");
+$cur_lang = $_REQUEST['lang'] ? $_REQUEST['lang'] :"zh";
+header("Content-type: text/html; charset=utf-8"); 
+
+// 检测PHP环境
+if(version_compare(PHP_VERSION,'5.3.0','<'))  die(L('require_php_version'));
+
+if(file_exists('./install.lock') && $f = file_get_contents("./install.lock")){
+  echo L("lock").'<br>';
+  exit();
+}
+
+$go = 1 ;
+
+//检测文件权限
+if(!new_is_writeable("./")){
+  echo L("not_writable_install").'<br>';
+  $go = 0;
+}
+if(!new_is_writeable("../Public/Uploads")){
+  echo L("not_writable_upload").'<br>';
+  $go = 0;
+}
+
+if(!new_is_writeable("../server/Application/Runtime")){
+  echo L("not_writable_server_runtime").'<br>';
+  $go = 0;
+}
+
+if(!new_is_writeable("../server/Application/Common/Conf/config.php")){
+  echo L("not_writable_config").'<br>';
+  $go = 0;
+}
+if(!new_is_writeable("../server/Application/Home/Conf/config.php")){
+  echo L("not_writable_home_config").'<br>';
+  $go = 0;
+}
+
+if ($cur_lang == 'en') {
+  if(!new_is_writeable("../web/index.html")){
+    echo L("not_writable_web_docconfig").'<br>';
+    $go = 0;
+  }
+
+  if(!new_is_writeable("../web_src/index.html")){
+    echo L("not_writable_web_src_docconfig").'<br>';
+    $go = 0;
+  }
+}
+
+
+//检查扩展
+if(!extension_loaded("gd")){
+  echo '请安装php-gd<br>';
+  $go = 0;
+}
+/*
+if(!extension_loaded("mcrypt")){
+  echo '请安装php-mcrypt<br>';
+  $go = 0;
+}
+*/
+if(!extension_loaded("mbstring")){
+  echo '请安装php-mbstring<br>';
+  $go = 0;
+}
+
+if(!extension_loaded("zlib")){
+  echo '请安装php-zlib<br>';
+  $go = 0;
+}
+
+if(!extension_loaded("PDO") && !extension_loaded("pdo") ){
+  echo '请安装php-pdo<br>';
+  $go = 0;
+}
+
+/*if(extension_loaded("sqlite") || extension_loaded("sqlite3")){
+  echo '请安装php-sqlite<br>';
+  $go = 0;
+}
+*/
+
+if (!$go) {
+  exit();
+}
+
+
+
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title> ShowDoc</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link href="../Public/bootstrap/css/bootstrap.min.css" rel="stylesheet">
+    <style type="text/css">
+    @charset "utf-8";
+	body {
+		font:14px/1.5 "Microsoft Yahei","微软雅黑",Tahoma,Arial,Helvetica,STHeiti;
+	}
+  .form-signin{
+    display: none;
+  }
+    </style>
+
+  </head>
+  <body>
+<link rel="stylesheet" href="../Public/css/login.css" />
+
+    <div class="container">
+
+      <form class="form-signin" method="post">
+        <h3 class="form-signin-heading"><?php echo L("install_title");?></h3>
+        <br>
+        <div>
+	        <select id="db_type">
+	        	<option value="sqlite"><?php echo L("use_sqlite");?></option>
+	        	<option value="mysql"><?php echo L("use_mysql");?></option>
+	        </select>
+        </div>
+        <br>
+        <div class="mysql-info" style="display:none">
+	        <input type="text" class="input-block-level"  name="db_host" id = "db_host" placeholder="<?php echo L("server_address");?>">
+	        <input type="text" class="input-block-level"  name="db_port" id = "db_port"  placeholder="<?php echo L("server_port");?>">
+	        <input type="text" class="input-block-level"  name="db_name" id = "db_name"  placeholder="<?php echo L("db_name");?>">
+	        <input type="text" class="input-block-level"  name="db_user" id = "db_user"  placeholder="<?php echo L("db_user");?>">
+	        <input type="text" class="input-block-level"  name="db_password" id = "db_password"  placeholder="<?php echo L("db_password");?>">
+        </div>
+        <div class="sqlite_tips" ><?php echo L("sqlite_tips");?></div>
+        <input type="hidden" value="<?php echo $cur_lang;?>" id="lang">
+        <br>
+        <div>
+        	 <button class="btn btn-large btn-primary " id="start" type="submit"><?php echo L("go");?>&nbsp;&nbsp;<i class="icon-circle-arrow-right"></i></button>
+          &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="https://www.showdoc.cc/help?page_id=16118" target="_blank"><?php echo L("FAQ");?></a>
+        </div>
+      </form>
+
+    </div> <!-- /container -->
+
+    
+	<script src="../Public/js/common/jquery.min.js"></script>
+    <script src="../Public/bootstrap/js/bootstrap.min.js"></script>
+  </body>
+</html> 
+
+ <script type="text/javascript">
+ $(function(){
+ 	$("#db_type").change(function(){
+ 		if ($("#db_type").val() == 'mysql') {
+      $(".mysql-info").show();
+ 			$(".sqlite_tips").hide();
+ 		};
+ 		if ($("#db_type").val() == 'sqlite') {
+      $(".mysql-info").hide();
+      $(".sqlite_tips").show();
+ 		};
+ 	});
+
+
+
+  function install(){
+    var db_type = $("#db_type").val();
+    var db_host = $("#db_host").val();
+    var db_port = $("#db_port").val();
+    var db_name = $("#db_name").val();
+    var db_user = $("#db_user").val();
+    var lang = $("#lang").val();
+    var db_password = $("#db_password").val();
+    $.post(
+      'ajax.php',
+      {"lang":lang,"db_type":db_type,"db_host":db_host,"db_port":db_port,"db_name":db_name,"db_user":db_user,"db_password":db_password},
+      function(data){
+        if (data.error_code === 0) {
+          //安装成功
+          //alert(data.message);
+          var text = '<div><?php echo L("install_success_help");?></div><br>';
+           text += '<div><a href="../" ><?php echo L("home");?></a></div>';
+           $(".form-signin").html(text);
+             $(".form-signin").show();
+
+        }else{
+          alert(data.message);
+        }
+      },
+      "json"
+
+      ); 
+  }
+
+  $("#start").click(function(){
+
+    install();
+    return false;
+  });
+  //showdoc不再支持mysql，所以不再让用户选择数据库，而是直接跳过去.
+  install();
+
+ });
+
+</script>
diff --git a/install/index.php b/install/index.php
new file mode 100644
index 0000000..ce4adec
--- /dev/null
+++ b/install/index.php
@@ -0,0 +1,57 @@
+<?php
+// ShowDoc安装脚本
+// install Showdoc
+// 
+// --------
+// 	如果你能在浏览器中看到本句话，则证明你没有安装好PHP运行环境。请先安装好PHP运行环境
+// --------
+include("common.php");
+
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title> ShowDoc</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link href="../Public/bootstrap/css/bootstrap.min.css" rel="stylesheet">
+    <style type="text/css">
+    @charset "utf-8";
+	body {
+		font:14px/1.5 "Microsoft Yahei","微软雅黑",Tahoma,Arial,Helvetica,STHeiti;
+	}
+    </style>
+
+  </head>
+  <body>
+<link rel="stylesheet" href="../Public/css/login.css" />
+
+    <div class="container">
+
+      <form class="form-signin" method="get" action="database.php">
+        <h3 class="form-signin-heading">选择语言<br>(Choose language)</h3>
+        <br>
+        <div>
+	        <select id="db_type" name="lang">
+	        	<option value="zh">中文</option>
+	        	<option value="en">English</option>
+	        </select>
+        </div>
+        <br>
+
+        <br>
+        <div>
+        	 <button class="btn btn-large btn-primary " id="start" type="submit">ok&nbsp;&nbsp;<i class="icon-circle-arrow-right"></i></button>
+        </div>
+      </form>
+
+    </div> <!-- /container -->
+
+    
+	<script src="../Public/js/common/jquery.min.js"></script>
+    <script src="../Public/bootstrap/js/bootstrap.min.js"></script>
+  </body>
+</html> 
diff --git a/install/lang.en.php b/install/lang.en.php
new file mode 100644
index 0000000..b106bf8
--- /dev/null
+++ b/install/lang.en.php
@@ -0,0 +1,38 @@
+<?php
+return array(
+  
+  "install_title"=>'Install ShowDoc',
+  "use_sqlite"=>'Use Sqlite Database',
+  "use_mysql"=>'Use Mysql Database',
+  "server_address"=>'Server address (e.g: localhost)',
+  "server_port"=>'Port(e.g:3306)',
+  "db_name"=>'Database Name(e.g:showdoc)',
+  "db_user"=>'Database Username',
+  "db_password"=>' Database Password',
+  "sqlite_tips"=>'Sqlite has supported by PHP and you just need to click the Go buttun',
+  "go"=>'Go',
+  "install_success_help"=>'Installation success!The password of the default administrator account is showdoc/123456 ,After login, you can see the management backstage access in the upper right corner.In addition, it is strongly recommended to modify the administrator password .<br>More help :<a href="https://www.showdoc.cc/help-en" target="_blank">https://www.showdoc.cc/help-en</a>',
+  "home"=>'Website Home',
+  "FAQ"=>'FAQ',
+
+  
+  "lock"=>'ShowDoc has been installed！If you want to reinstall,please delete file /install/install.lock ',
+  "not_writable_install"=>' Directory install is not writable !',
+  "not_writable_upload"=>'Directory Public/Uploads/  is not writable !',
+  "not_writable_runtime"=>'Directory server/Application/Runtime is not writable !',
+  "not_writable_server_runtime"=>'Directory server/Application/Runtime is not writable !',
+  "not_writable_config"=>'File server/Application/Common/Conf/config.php is not writable !',
+  "not_writable_home_config"=>'File server/Application/Home/Conf/config.php is not writable !',
+  "not_writable_sqlite"=>'Directory Sqlite is not writable !',
+  "not_writable_sqlite_db"=>'File Sqlite/showdoc.db.php is not writable !',
+  "not_writable_web_docconfig"=>'File web/index.html is not writable !',
+  "not_writable_web_src_docconfig"=>'File web_src/index.html is not writable !',
+  "install_success"=>'Installation success!Please delete the /install directory, avoid the script to be executed again',
+  "install_config_not_writable"=>'Fail to write config file ',
+  "db_wrong"=>'Database connection error',
+  "db_has_data"=>'Database tables already exists,please clear up and try again',
+  "create_table_fail"=>'Fail to create table',
+  "install_config_not_writable"=>'Fail to write config file',
+
+  "require_php_version" => "require PHP > 5.3.0 ",
+  );
diff --git a/install/lang.zh.php b/install/lang.zh.php
new file mode 100644
index 0000000..a0c204e
--- /dev/null
+++ b/install/lang.zh.php
@@ -0,0 +1,38 @@
+<?php
+return array(
+
+  "install_title"=>'安装ShowDoc',
+  "use_sqlite"=>'使用Sqlite数据库',
+  "use_mysql"=>'使用Mysql数据库',
+  "server_address"=>'服务器地址，一般为localhost',
+  "server_port"=>'端口，一般为3306',
+  "db_name"=>'数据库名，建议数据库名为showdoc',
+  "db_user"=>'数据库用户名',
+  "db_password"=>'数据库密码',
+  "sqlite_tips"=>'PHP内置支持Sqlite数据库，你无须再配置数据库，直接点击开始即可',
+  "go"=>'开始',
+  "install_success_help"=>'安装成功！默认管理员账户密码是showdoc/123456。登录后，在右上角可以看到管理后台入口。此外，强烈建议修改管理员初始密码。若再遇到问题，可参考ShowDoc帮助文档：<a href="https://www.showdoc.cc/help" target="_blank">https://www.showdoc.cc/help</a>',
+  "home"=>'进入网站首页',
+  "FAQ"=>'常见问题',
+
+
+  "lock"=>'本程序已经安装过！如果要解除安装锁定，则可删除install目录下的install.lock文件后再重新访问本页面',
+  "not_writable_install"=>'请赋予 install 目录以可写权限！',
+  "not_writable_upload"=>'请赋予 Public/Uploads/ 目录以可写权限！',
+  "not_writable_runtime"=>'请赋予 server/Application/Runtime 目录以可写权限！',
+  "not_writable_server_runtime"=>'请赋予 server/Application/Runtime 目录以可写权限！',
+  "not_writable_config"=>'请赋予 server/Application/Common/Conf/config.php 文件以可写权限！',
+  "not_writable_home_config"=>'请赋予 server/Application/Home/Conf/config.php 文件以可写权限！<br>(如果你确定赋予了文件权限但却一直看到此信息，则可考虑关闭selinux试试)',
+  "not_writable_sqlite"=>'请赋予 Sqlite 目录以可写权限！',
+  "not_writable_sqlite_db"=>'请赋予 Sqlite/showdoc.db.php 以可写权限！',
+  "not_writable_web_docconfig"=>'请赋予 web/index.html 以可写权限！',
+  "not_writable_web_src_docconfig"=>'请赋予 web_src/index.html 以可写权限！',
+  "install_success"=>'安装成功！建议删除install目录，以免安装脚本被再次执行。',
+  "install_config_not_writable"=>'安装失败，配置文件写入错误！',
+  "db_wrong"=>'数据库链接错误，请检查配置信息是否填写正确',
+  "db_has_data"=>'检测到该数据库已经存在数据。请清理后再重试',
+  "create_table_fail"=>'创建数据库表失败！',
+  "install_config_not_writable"=>'安装失败，配置文件写入错误！',
+
+  "require_php_version" => "需要PHP5.3.0以上版本",
+  );
\ No newline at end of file
diff --git a/install/non_interactive.php b/install/non_interactive.php
new file mode 100644
index 0000000..365407d
--- /dev/null
+++ b/install/non_interactive.php
@@ -0,0 +1,69 @@
+<?php
+// --------
+//  如果你能在浏览器中看到本句话，则证明你没有安装好PHP运行环境。请先安装好PHP运行环境
+// --------
+ini_set("display_errors", "Off");
+error_reporting(E_ALL | E_STRICT);
+header("Content-type: text/html; charset=utf-8"); 
+include("common.php");
+if(file_exists('./install.lock') && $f = file_get_contents("./install.lock")){
+  echo L("lock")."\n";
+}else{
+  user_sqlite();
+}
+
+
+function user_sqlite(){
+        clear_runtime();//清除缓存
+        write_js_lang();
+        
+        $ret = write_home_config();
+        if ($ret) {
+          file_put_contents("./install.lock","https://www.showdoc.cc/");
+            echo 'install success !!!'."\n";
+        }else{
+            echo "\n".L("not_writable_home_config")."\n";
+        }
+}
+
+
+function write_home_config(){
+  $lang = $_REQUEST['lang'] ? $_REQUEST['lang'] :"zh";
+  if ($lang == 'en') {
+    $DEFAULT_LANG = 'en-us';
+  }else{
+    $DEFAULT_LANG = 'zh-cn';
+  }
+        $config = "<?php ";
+        $config .= "
+return array(
+  //'配置项'=>'配置值'
+    'DB_TYPE'   => 'Sqlite', 
+    'DB_NAME'   => './Sqlite/showdoc.db.php', 
+    'LANG_SWITCH_ON' => true,   // 开启语言包功能
+    'LANG_AUTO_DETECT' => false, // 自动侦测语言 开启多语言功能后有效
+    'DEFAULT_LANG' => '{$DEFAULT_LANG}', // 默认语言
+    'LANG_LIST'        => 'zh-cn,en-us', // 允许切换的语言列表 用逗号分隔
+    'VAR_LANGUAGE'     => 'l', // 默认语言切换变量
+);";
+
+  $ret = file_put_contents("../server/Application/Home/Conf/config.php", $config);
+    return $ret ;
+}
+
+function write_js_lang(){
+    $lang = $_REQUEST['lang'] ? $_REQUEST['lang'] :"zh";
+    if ($lang == 'en') {
+       replace_file_content("../web/index.html","zh-cn","en") ;
+       replace_file_content("../web_src/index.html","zh-cn","en") ;
+    }
+    
+}
+
+function replace_file_content($file , $from ,$to ){
+    $content = file_get_contents($file);
+    $content2 = str_replace($from,$to,$content);
+    if ($content2) {
+        file_put_contents($file,$content2);
+    }
+}