diff --git a/application/index/controller/Install.php b/application/index/controller/Install.php
index c3d6970b..78a8492e 100644
--- a/application/index/controller/Install.php
+++ b/application/index/controller/Install.php
@@ -166,108 +166,4 @@ EOT;
         ]);
         return $this->fetch();
     }
-
-    public function update($start = 0)
-    {
-        try {
-            $user = false;
-            if (Session::has('uid')) {
-                $user = Users::get(Session::get('uid'));
-                if (!$user) {
-                    Session::delete('uid');
-                }
-            }
-
-            if (!$user || !$user->is_admin) {
-                $this->redirect(url('/'));
-            }
-
-            $path = Env::get('root_path') . 'update.sql';
-            $file = @file_get_contents($path);
-            if (!$file) {
-                $this->redirect(url('/'));
-            }
-
-            $code = 0;
-            $msg = null;
-            if ($start == 1) {
-                if ($file) {
-                    $config = Config::pull('db');
-
-                    // 替换sql关键字
-                    $file = str_replace([
-                        '{database}'
-                    ], [
-                        $config['database']
-                    ], $file);
-
-                    $mysqli = new \mysqli(
-                        $config['hostname'],
-                        $config['username'],
-                        $config['password'],
-                        $config['database'],
-                        $config['hostport']
-                    );
-                    if ($mysqli->connect_errno) {
-                        $mysqli->close();
-                        throw new Exception($mysqli->connect_error);
-                    }
-
-                    $mysqli->autocommit(false);
-                    $mysqli->select_db($config['database']);
-                    $mysqli->query("SET NAMES utf8");
-
-                    // 新建表字段
-                    $tableFields = Config::pull('table');
-
-                    foreach ($tableFields as $table => $fields) {
-                        foreach ($fields as $field => $sql) {
-                            $fetchFields = $mysqli->query("DESCRIBE `{$table}`;");
-                            // 判断字段是否已存在
-                            $flag = true;
-                            foreach ($fetchFields as $fetchField) {
-                                if ($field == $fetchField['Field']) {
-                                    $flag = false;
-                                }
-                            }
-                            if ($flag) {
-                                if (!$mysqli->query($sql)) {
-                                    throw new Exception($mysqli->error);
-                                }
-                            }
-                        }
-                    }
-
-                    foreach (explode(';', $file) as $value) {
-                        if ($value && !ctype_space($value)) {
-                            if (!$mysqli->query($value . ';')) {
-                                throw new Exception('<p>数据导入失败！</p><p>错误信息：<br/>' . $mysqli->error . '</p><p>sql语句：<br/>' . $value . '</p>');
-                            }
-                        }
-                    }
-
-                    $mysqli->commit();
-                    $mysqli->autocommit(true);
-                    $mysqli->close();
-                }
-                $code = 1;
-                $msg = '更新成功，返回<a href="/">首页</a>';
-                // 删除sql文件
-                @unlink($path);
-                if (file_exists(Env::get('root_path') . 'install.sql')) {
-                    @unlink(Env::get('root_path') . 'install.sql');
-                }
-            }
-        } catch (Exception $e) {
-            $mysqli->rollback();
-            $mysqli->close();
-            $code = 0;
-            $msg = $e->getMessage();
-        }
-        $this->assign([
-            'code' => $code,
-            'msg' => $msg
-        ]);
-        return $this->fetch();
-    }
 }
diff --git a/application/index/controller/admin/System.php b/application/index/controller/admin/System.php
index a8d6adc5..368566d8 100644
--- a/application/index/controller/admin/System.php
+++ b/application/index/controller/admin/System.php
@@ -8,6 +8,7 @@
 
 namespace app\index\controller\admin;
 
+use app\common\model\Config;
 use think\Db;
 use app\common\model\Images;
 use think\Exception;