diff --git a/application/index/controller/admin/System.php b/application/index/controller/admin/System.php
index 20de4118..70ff3768 100644
--- a/application/index/controller/admin/System.php
+++ b/application/index/controller/admin/System.php
@@ -119,25 +119,6 @@ class System extends Base
 
             $isBackup && $upgrade->backup($backup); // 备份原系统
 
-            // 复制 env 文件
-            $config = \config('database.');
-            $env = str_ireplace([
-                '{hostname}',
-                '{database}',
-                '{username}',
-                '{password}',
-                '{hostport}',
-            ], [
-                $config['hostname'],
-                $config['database'],
-                $config['username'],
-                $config['password'],
-                $config['hostport'],
-            ], @file_get_contents($path . '.env.example'));
-            if (!@file_put_contents($path . '.env', $env)) {
-                throw new \Exception('配置文件写入失败');
-            }
-
             // 创建安装锁文件
             if (!@fopen($path . 'application/install.lock', 'w')) {
                 throw new \Exception('安装锁文件创建失败');