diff --git a/Builder/V2ray.py b/Builder/V2ray.py
index 4cad99e..a68e95f 100644
--- a/Builder/V2ray.py
+++ b/Builder/V2ray.py
@@ -139,7 +139,7 @@ def loadStream(streamInfo: dict) -> dict:
         'grpc': grpcStream,
     }
     if streamInfo['type'] not in streamEntry:
-        raise Exception('Unknown stream type')
+        raise RuntimeError('Unknown stream type')
     streamObject = streamEntry[streamInfo['type']](streamInfo)
     return {
         **streamObject,
diff --git a/Builder/VLESS.py b/Builder/VLESS.py
new file mode 100644
index 0000000..cf74b2c
--- /dev/null
+++ b/Builder/VLESS.py
@@ -0,0 +1,23 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import json
+from Builder import Xray
+
+def load(proxyInfo: dict, socksInfo: dict, configFile: str) -> tuple[list, str, dict]:
+    outboundConfig = {
+        'protocol': 'vless',
+        'settings': {
+            'vnext': [{
+                'address': proxyInfo['server'],
+                'port': proxyInfo['port'],
+                'users': [{**{
+                    'id': proxyInfo['id'],
+                    'encryption': proxyInfo['method']
+                }, **Xray.xtlsFlow(proxyInfo['stream'])}]
+            }]
+        },
+        'streamSettings': Xray.loadStream(proxyInfo['stream'])
+    }
+    vlessConfig = Xray.loadConfig(socksInfo, outboundConfig)  # load config file for xray-core
+    return ['xray', '-c', configFile], json.dumps(vlessConfig), {}
diff --git a/Builder/Xray.py b/Builder/Xray.py
new file mode 100644
index 0000000..624c6f3
--- /dev/null
+++ b/Builder/Xray.py
@@ -0,0 +1,79 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+from Builder import V2ray
+
+loadConfig = V2ray.loadConfig  # same basic config format
+
+
+def loadSecure(secureInfo: dict or None) -> dict:  # TLS / XTLS encrypt config
+    if secureInfo is None:
+        return {'security': 'none'}  # without TLS / XTLS options
+    if secureInfo['type'] not in ['tls', 'xtls']:
+        raise RuntimeError('Unknown secure type')
+    secureObject = {
+        'allowInsecure': not secureInfo['verify']  # whether verify server's certificate
+    }
+    if secureInfo['alpn'] is not None:
+        secureObject['alpn'] = secureInfo['alpn'].split(',')  # multi-alpn like `h2,http/1.1`
+    if secureInfo['sni'] != '':
+        secureObject['serverName'] = secureInfo['sni']  # SNI field in TLS / XTLS protocol
+    return {
+        'security': secureInfo['type'],
+        '%sSettings' % secureInfo['type']: secureObject
+    }
+
+
+def wsStream(streamInfo: dict) -> dict:  # WebSocket stream config (different ed config with v2fly-core)
+    wsObject = {
+        'path': streamInfo['path']  # websocket connection path
+    }
+    if streamInfo['host'] != '':  # empty host should not be set
+        wsObject['headers'] = {}
+        wsObject['headers']['Host'] = streamInfo['host']
+    if streamInfo['ed'] is not None:  # ed value into uri path -> /...?ed=xxx
+        if wsObject['path'].find('?') == -1:  # no params in raw path
+            wsObject['path'] += '?ed=' + str(streamInfo['ed'])
+        else:
+            wsObject['path'] += '&ed=' + str(streamInfo['ed'])
+    return {
+        'network': 'ws',
+        'wsSettings': wsObject
+    }
+
+
+def loadStream(streamInfo: dict) -> dict:
+    streamEntry = {
+        'tcp': V2ray.tcpStream,
+        'kcp': V2ray.kcpStream,
+        'ws': wsStream,  # different with v2fly-core
+        'h2': V2ray.h2Stream,
+        'quic': V2ray.quicStream,
+        'grpc': V2ray.grpcStream,
+    }
+    if streamInfo['type'] not in streamEntry:
+        raise RuntimeError('Unknown stream type')
+    streamObject = streamEntry[streamInfo['type']](streamInfo)
+    return {
+        **streamObject,
+        **loadSecure(streamInfo['secure'])
+    }
+
+
+def xtlsFlow(streamInfo: dict or None) -> dict:
+    if streamInfo['secure'] is not None:  # without TLS / XTLS options
+        return {}
+    if streamInfo['secure']['type'] != 'xtls':  # not XTLS secure type
+        return {}
+    xtlsFlows = {
+        'xtls-origin': 'xtls-rprx-origin',
+        'xtls-direct': 'xtls-rprx-direct',
+        'xtls-splice': 'xtls-rprx-splice',
+    }
+    if streamInfo['secure']['flow'] not in xtlsFlows:
+        raise RuntimeError('Unknown xtls flow')
+    return {
+        'flow': xtlsFlows[streamInfo['secure']['flow']] + (  # xtls-rprx-xxx
+            '-udp443' if streamInfo['secure']['udp443'] else ''  # whether block udp/443 (disable http/3)
+        )
+    }
diff --git a/Builder/__init__.py b/Builder/__init__.py
index 7250525..0800775 100644
--- a/Builder/__init__.py
+++ b/Builder/__init__.py
@@ -4,9 +4,10 @@
 import os
 import copy
 
+from Builder import VMess
+from Builder import VLESS
 from Builder import Shadowsocks
 from Builder import ShadowsocksR
-from Builder import VMess
 
 from Basis.Logger import logging
 from Basis.Process import Process
@@ -17,6 +18,7 @@ clientEntry = {
     'ss': [Shadowsocks.load, '.json'],
     'ssr': [ShadowsocksR.load, '.json'],
     'vmess': [VMess.load, '.json'],
+    'vless': [VLESS.load, '.json']
 }
 
 
diff --git a/demo.py b/demo.py
index 8208735..ab84b3a 100755
--- a/demo.py
+++ b/demo.py
@@ -41,9 +41,30 @@ proxyVMess = {
     }
 }
 
+proxyVLESS = {
+    'server': '127.0.0.1',
+    'port': 12345,
+    'method': 'none',
+    'id': '614d3a56-8a04-4c65-88a2-45896f0bd13c',
+    'aid': 0,
+    'stream': {
+        'type': 'tcp',
+        'obfs': None,
+        'secure': {
+            'type': 'xtls',
+            'sni': '343.re',
+            'alpn': None,
+            'verify': True,
+            'flow': 'xtls-direct',
+            'udp443': False
+        },
+    }
+}
+
 # client = Builder('ss', proxySS)
 # client = Builder('ssr', proxySSR)
-client = Builder('vmess', proxyVMess)
+# client = Builder('vmess', proxyVMess)
+client = Builder('vless', proxyVLESS)
 
 logging.critical(client.id)
 logging.critical(client.proxyType)