diff --git a/public/index.php b/public/index.php
index 22dc158..675f1fc 100644
--- a/public/index.php
+++ b/public/index.php
@@ -15,6 +15,12 @@ namespace think;
 // 加载基础文件
 require __DIR__ . '/../thinkphp/base.php';
 
+
+if(!file_exists("install/lock")){
+    $url=$_SERVER['HTTP_HOST'].trim($_SERVER['SCRIPT_NAME'],'index.php').'install/index.php';
+    header("Location:http://$url");
+    exit();
+}
 // 支持事先使用静态方法设置Request对象和Config对象
 
 // 执行应用并响应