diff --git a/app/Http/Controllers/Client/Protocols/Loon.php b/app/Http/Controllers/Client/Protocols/Loon.php
new file mode 100644
index 00000000..70014701
--- /dev/null
+++ b/app/Http/Controllers/Client/Protocols/Loon.php
@@ -0,0 +1,128 @@
+<?php
+
+namespace App\Http\Controllers\Client\Protocols;
+
+use App\Utils\Helper;
+
+class Loon
+{
+    public $flag = 'loon';
+    private $servers;
+    private $user;
+
+    public function __construct($user, $servers)
+    {
+        $this->user = $user;
+        $this->servers = $servers;
+    }
+
+    public function handle()
+    {
+        $servers = $this->servers;
+        $user = $this->user;
+
+        $uri = '';
+        header("Subscription-Userinfo: upload={$user['u']}; download={$user['d']}; total={$user['transfer_enable']}; expire={$user['expired_at']}");
+
+        foreach ($servers as $item) {
+            if ($item['type'] === 'shadowsocks'
+                && in_array($item['cipher'], [
+                    'aes-128-gcm',
+                    'aes-192-gcm',
+                    'aes-256-gcm',
+                    'chacha20-ietf-poly1305'
+                ])
+            ) {
+                $uri .= self::buildShadowsocks($user['uuid'], $item);
+            }
+            if ($item['type'] === 'vmess') {
+                $uri .= self::buildVmess($user['uuid'], $item);
+            }
+            if ($item['type'] === 'trojan') {
+                $uri .= self::buildTrojan($user['uuid'], $item);
+            }
+        }
+        return $uri;
+    }
+
+
+    public static function buildShadowsocks($password, $server)
+    {
+        $config = [
+            "{$server['name']}=Shadowsocks",
+            "{$server['host']}",
+            "{$server['port']}",
+            "{$server['cipher']}",
+            "{$password}",
+            'fast-open=false',
+            'udp=true'
+        ];
+        $config = array_filter($config);
+        $uri = implode(',', $config);
+        $uri .= "\r\n";
+        return $uri;
+    }
+
+    public static function buildVmess($uuid, $server)
+    {
+        $config = [
+            "{$server['name']}=vmess",
+            "{$server['host']}",
+            "{$server['port']}",
+            'aes-128-gcm',
+            "{$uuid}",
+            'fast-open=false',
+            'udp=true',
+            "alterId=0"
+        ];
+
+        if ($server['network'] === 'tcp') {
+            array_push($config, 'transport=tcp');
+        }
+        if ($server['tls']) {
+            if ($server['network'] === 'tcp')
+                array_push($config, 'over-tls=true');
+            if ($server['tlsSettings']) {
+                $tlsSettings = $server['tlsSettings'];
+                if (isset($tlsSettings['allowInsecure']) && !empty($tlsSettings['allowInsecure']))
+                    array_push($config, 'skip-cert-verify=' . ($tlsSettings['allowInsecure'] ? 'true' : 'false'));
+                if (isset($tlsSettings['serverName']) && !empty($tlsSettings['serverName']))
+                    array_push($config, "tls-name={$tlsSettings['serverName']}");
+            }
+        }
+        if ($server['network'] === 'ws') {
+            array_push($config, 'transport=ws');
+            if ($server['networkSettings']) {
+                $wsSettings = $server['networkSettings'];
+                if (isset($wsSettings['path']) && !empty($wsSettings['path']))
+                    array_push($config, "path={$wsSettings['path']}");
+                if (isset($wsSettings['headers']['Host']) && !empty($wsSettings['headers']['Host']))
+                    array_push($config, "host={$wsSettings['headers']['Host']}");
+            }
+        }
+
+        $uri = implode(',', $config);
+        $uri .= "\r\n";
+        return $uri;
+    }
+
+    public static function buildTrojan($password, $server)
+    {
+        $config = [
+            "{$server['name']}=trojan",
+            "{$server['host']}",
+            "{$server['port']}",
+            "{$password}",
+            $server['server_name'] ? "tls-name={$server['server_name']}" : "",
+            'fast-open=false',
+            'udp=true'
+        ];
+        if (!empty($server['allow_insecure'])) {
+            array_push($config, $server['allow_insecure'] ? 'skip-cert-verify=true' : 'skip-cert-verify=false');
+        }
+        $config = array_filter($config);
+        $uri = implode(',', $config);
+        $uri .= "\r\n";
+        return $uri;
+    }
+}