diff --git a/README.md b/README.md
index 868f94f3..fbfe6df6 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,7 @@
 ---
 * PHP版本 ≥ 5.6
 * Mysqli
+* Finfo拓展
 * Curl拓展
 * Zip拓展
 * Rewrite
diff --git a/application/index/controller/Install.php b/application/index/controller/Install.php
index e99ed8e8..38ab3dcf 100644
--- a/application/index/controller/Install.php
+++ b/application/index/controller/Install.php
@@ -19,11 +19,11 @@ class Install extends Controller
 {
     public function index($stop = 1)
     {
-        // TODO 检测是否已安装
 
         $rootPath = Env::get('root_path');
         $configPath = Env::get('config_path');
 
+        // 检测是否已安装
         if (file_exists($rootPath . 'install.lock') && !Session::has('install_success')) {
             exit('你已安装成功，请勿重复安装！');
         }
@@ -31,16 +31,18 @@ class Install extends Controller
         $phpVerGt56 = PHP_VERSION >= 5.6;
         $isCurl = function_exists('curl_init');
         $isZip = function_exists('zip_open');
+        $isFinfo = function_exists('finfo_open');
         $isMysqli = class_exists('mysqli');
 
         switch ($stop) {
             case 1:
                 // 运行环境检测
-                $testing = $phpVerGt56 && $isCurl && $isZip && $isMysqli;
+                $testing = $phpVerGt56 && $isCurl && $isFinfo && $isZip && $isMysqli;
                 $this->assign([
                     'phpVerGt56' => $phpVerGt56,
                     'isCurl' => $isCurl,
                     'isZip' => $isZip,
+                    'isFinfo' => $isFinfo,
                     'isMysqli' => $isMysqli,
                     'testing' => $testing
                 ]);
diff --git a/application/index/view/install/index.html b/application/index/view/install/index.html
index 54a50cb5..81763e31 100644
--- a/application/index/view/install/index.html
+++ b/application/index/view/install/index.html
@@ -52,10 +52,10 @@
       </tr>
       <tr>
         <td align="right">
-          Curl拓展：
+          finfo拓展：
         </td>
         <td align="left">
-          {if ($isCurl) }
+          {if ($isFinfo) }
           <i class="mdui-icon material-icons mdui-text-color-green">&#xe86c;</i>
           {else/}
           <i class="mdui-icon material-icons mdui-text-color-red">&#xe5c9;</i>