diff --git a/public/index.php b/public/index.php
new file mode 100644
index 0000000..0f23ac8
--- /dev/null
+++ b/public/index.php
@@ -0,0 +1,10 @@
+<?php
+// 首页入口 - 根据安装状态自动路由
+$configFile = __DIR__ . '/../config/db-config.json';
+if (file_exists($configFile)) {
+    header('Location: /login.php');
+    exit;
+} else {
+    header('Location: /install.php');
+    exit;
+}