diff --git a/DrissionPage/_base/browser.py b/DrissionPage/_base/browser.py
index beb6416..4c7aee0 100644
--- a/DrissionPage/_base/browser.py
+++ b/DrissionPage/_base/browser.py
@@ -6,7 +6,7 @@
 from time import sleep
 
 from .chromium_driver import BrowserDriver
-from .._units.browser_download_manager import BrowserDownloadManager
+from .._units.download_manager import BrowserDownloadManager
 
 
 class Browser(object):
diff --git a/DrissionPage/_base/browser.pyi b/DrissionPage/_base/browser.pyi
index 81bd82a..8146d35 100644
--- a/DrissionPage/_base/browser.pyi
+++ b/DrissionPage/_base/browser.pyi
@@ -7,7 +7,7 @@ from typing import List, Optional, Union
 
 from .chromium_driver import BrowserDriver
 from .._pages.chromium_page import ChromiumPage
-from .._units.browser_download_manager import BrowserDownloadManager
+from .._units.download_manager import BrowserDownloadManager
 
 
 class Browser(object):
diff --git a/DrissionPage/_commons/browser.py b/DrissionPage/_commons/browser.py
index 80106c4..25909bb 100644
--- a/DrissionPage/_commons/browser.py
+++ b/DrissionPage/_commons/browser.py
@@ -19,24 +19,19 @@ from .tools import port_is_using
 def connect_browser(option):
     """连接或启动浏览器
     :param option: ChromiumOptions对象
-    :return: chrome 路径和进程对象组成的元组
+    :return: None
     """
     debugger_address = option.debugger_address.replace('localhost', '127.0.0.1').lstrip('http://').lstrip('https://')
     chrome_path = option.browser_path
 
     ip, port = debugger_address.split(':')
-    if ip != '127.0.0.1':
+    if ip != '127.0.0.1' or port_is_using(ip, port) or option.is_existing_only:
         test_connect(ip, port)
-        return None, None
-
-    if port_is_using(ip, port):
-        test_connect(ip, port)
-        return None, None
-
-    args = get_launch_args(option)
-    set_prefs(option)
+        return
 
     # ----------创建浏览器进程----------
+    args = get_launch_args(option)
+    set_prefs(option)
     try:
         debugger = _run_browser(port, chrome_path, args)
 
@@ -63,7 +58,7 @@ def get_launch_args(opt):
     result = set()
     has_user_path = False
     remote_allow = False
-    headless = False
+    headless = None
     for i in opt.arguments:
         if i.startswith(('--load-extension=', '--remote-debugging-port=')):
             continue
@@ -74,7 +69,14 @@ def get_launch_args(opt):
         elif i.startswith('--remote-allow-origins='):
             remote_allow = True
         elif i.startswith('--headless'):
-            headless = True
+            if i == '--headless=false':
+                headless = False
+                continue
+            elif i == '--headless':
+                i = '--headless=new'
+                headless = True
+            else:
+                headless = True
 
         result.add(i)
 
@@ -87,7 +89,7 @@ def get_launch_args(opt):
     if not remote_allow:
         result.add('--remote-allow-origins=*')
 
-    if not headless and system().lower() == 'linux':
+    if headless is not None and system().lower() == 'linux':
         from os import popen
         r = popen('systemctl list-units | grep graphical.target')
         if 'graphical.target' not in r.read():
@@ -146,27 +148,29 @@ def set_prefs(opt):
         dump(prefs_dict, f)
 
 
-def test_connect(ip, port):
+def test_connect(ip, port, timeout=30):
     """测试浏览器是否可用
     :param ip: 浏览器ip
     :param port: 浏览器端口
+    :param timeout: 超时时间
     :return: None
     """
-    end_time = perf_counter() + 30
+    end_time = perf_counter() + timeout
     while perf_counter() < end_time:
         try:
-            tabs = requests_get(f'http://{ip}:{port}/json', timeout=10, headers={'Connection': 'close'}, proxies={'http': None, 'https': None}).json()
+            tabs = requests_get(f'http://{ip}:{port}/json', timeout=10, headers={'Connection': 'close'},
+                                proxies={'http': None, 'https': None}).json()
             for tab in tabs:
                 if tab['type'] == 'page':
                     return
         except Exception:
             sleep(.2)
 
-    if ip in ('127.0.0.1', 'localhost'):
-        raise BrowserConnectError(f'\n连接浏览器失败，可能原因：\n1、浏览器未启动\n2、{port}端口不是Chromium内核浏览器\n'
-                                  f'3、该浏览器未允许控制\n4、和已打开的浏览器冲突\n'
-                                  f'请尝试用ChromiumOptions指定别的端口和指定浏览器路径')
-    raise BrowserConnectError(f'{ip}:{port}浏览器无法链接。')
+    raise BrowserConnectError(f'\n{ip}:{port}浏览器无法链接。\n请确认：\n1、该端口为浏览器\n'
+                              f'2、已添加--remote-allow-origins=*和--remote-debugging-port={port}启动项\n'
+                              f'3、用户文件夹没有和已打开的浏览器冲突\n'
+                              f'4、如为无界面系统，请使用headless模式\n'
+                              f'可使用ChromiumOptions设置端口和用户文件夹路径。')
 
 
 def _run_browser(port, path: str, args) -> Popen:
diff --git a/DrissionPage/_commons/browser.pyi b/DrissionPage/_commons/browser.pyi
index a6fee1c..8c041ef 100644
--- a/DrissionPage/_commons/browser.pyi
+++ b/DrissionPage/_commons/browser.pyi
@@ -3,13 +3,18 @@
 @Author  :   g1879
 @Contact :   g1879@qq.com
 """
+from typing import Union
+
 from .._configs.chromium_options import ChromiumOptions
 
 
-def connect_browser(option: ChromiumOptions) -> tuple: ...
+def connect_browser(option: ChromiumOptions) -> None: ...
 
 
 def get_launch_args(opt: ChromiumOptions) -> list: ...
 
 
 def set_prefs(opt: ChromiumOptions) -> None: ...
+
+
+def test_connect(ip: str, port: Union[int, str], timeout: float = 30) -> None: ...
diff --git a/DrissionPage/_configs/chromium_options.py b/DrissionPage/_configs/chromium_options.py
index 38809a4..df0c21d 100644
--- a/DrissionPage/_configs/chromium_options.py
+++ b/DrissionPage/_configs/chromium_options.py
@@ -35,6 +35,7 @@ class ChromiumOptions(object):
             self._page_load_strategy = options.get('page_load_strategy', 'normal')
             self._proxy = om.proxies.get('http', None)
             self._system_user_path = options.get('system_user_path', False)
+            self._existing_only = options.get('existing_only', False)
 
             user_path = user = False
             for arg in self._arguments:
@@ -71,6 +72,7 @@ class ChromiumOptions(object):
         self._proxy = None
         self._auto_port = False
         self._system_user_path = False
+        self._existing_only = False
 
     @property
     def download_path(self):
@@ -138,6 +140,11 @@ class ChromiumOptions(object):
         """返回是否使用系统安装的浏览器所使用的用户数据文件夹"""
         return self._system_user_path
 
+    @property
+    def is_existing_only(self):
+        """返回是否只接管现有浏览器方式"""
+        return self._existing_only
+
     def set_argument(self, arg, value=None):
         """设置浏览器配置的argument属性
         :param arg: 属性名
@@ -242,7 +249,7 @@ class ChromiumOptions(object):
         :param on_off: 开或关
         :return: 当前对象
         """
-        on_off = 'new' if on_off else False
+        on_off = 'new' if on_off else 'false'
         return self.set_argument('--headless', on_off)
 
     def set_no_imgs(self, on_off=True):
@@ -354,6 +361,14 @@ class ChromiumOptions(object):
             self._auto_port = False
         return self
 
+    def existing_only(self, on_off=True):
+        """设置只接管已有浏览器，不自动启动新的
+        :param on_off: 是否开启自动获取端口号
+        :return: 当前对象
+        """
+        self._existing_only = on_off
+        return self
+
     def save(self, path=None):
         """保存设置到文件
         :param path: ini文件的路径， None 保存到当前读取的配置文件，传入 'default' 保存到默认ini文件
@@ -380,7 +395,7 @@ class ChromiumOptions(object):
 
         # 设置chrome_options
         attrs = ('debugger_address', 'binary_location', 'arguments', 'extensions', 'user', 'page_load_strategy',
-                 'auto_port', 'system_user_path')
+                 'auto_port', 'system_user_path', 'is_existing_only')
         for i in attrs:
             om.set_item('chrome_options', i, self.__getattribute__(f'_{i}'))
         # 设置代理
diff --git a/DrissionPage/_configs/chromium_options.pyi b/DrissionPage/_configs/chromium_options.pyi
index 68937fc..bcd3a0a 100644
--- a/DrissionPage/_configs/chromium_options.pyi
+++ b/DrissionPage/_configs/chromium_options.pyi
@@ -25,6 +25,7 @@ class ChromiumOptions(object):
         self._prefs_to_del: list = ...
         self._auto_port: bool = ...
         self._system_user_path: bool = ...
+        self._existing_only: bool = ...
 
     @property
     def download_path(self) -> str: ...
@@ -53,9 +54,6 @@ class ChromiumOptions(object):
     @property
     def arguments(self) -> list: ...
 
-    @debugger_address.setter
-    def debugger_address(self, address: str): ...
-
     @property
     def extensions(self) -> list: ...
 
@@ -65,6 +63,9 @@ class ChromiumOptions(object):
     @property
     def system_user_path(self) -> bool: ...
 
+    @property
+    def is_existing_only(self) -> bool: ...
+
     def set_argument(self, arg: str, value: Union[str, None, bool] = None) -> ChromiumOptions: ...
 
     def remove_argument(self, value: str) -> ChromiumOptions: ...
@@ -106,6 +107,8 @@ class ChromiumOptions(object):
 
     def auto_port(self, on_off: bool = True) -> ChromiumOptions: ...
 
+    def existing_only(self, on_off: bool = True) -> ChromiumOptions: ...
+
     def save(self, path: Union[str, Path] = None) -> str: ...
 
     def save_to_default(self) -> str: ...
diff --git a/DrissionPage/_configs/configs.ini b/DrissionPage/_configs/configs.ini
index 54d20ab..0190176 100644
--- a/DrissionPage/_configs/configs.ini
+++ b/DrissionPage/_configs/configs.ini
@@ -1,5 +1,5 @@
 [paths]
-download_path =
+download_path = 
 
 [chrome_options]
 debugger_address = 127.0.0.1:9222
@@ -11,6 +11,7 @@ page_load_strategy = normal
 user = Default
 auto_port = False
 system_user_path = False
+is_existing_only = False
 
 [session_options]
 headers = {'user-agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/603.3.8 (KHTML, like Gecko) Version/10.1.2 Safari/603.3.8', 'accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', 'connection': 'keep-alive', 'accept-charset': 'GB2312,utf-8;q=0.7,*;q=0.7'}
@@ -21,6 +22,6 @@ page_load = 30
 script = 30
 
 [proxies]
-http =
+http = 
 https = 
 
diff --git a/DrissionPage/_units/browser_download_manager.py b/DrissionPage/_units/download_manager.py
similarity index 100%
rename from DrissionPage/_units/browser_download_manager.py
rename to DrissionPage/_units/download_manager.py
diff --git a/DrissionPage/_units/browser_download_manager.pyi b/DrissionPage/_units/download_manager.pyi
similarity index 100%
rename from DrissionPage/_units/browser_download_manager.pyi
rename to DrissionPage/_units/download_manager.pyi
diff --git a/DrissionPage/_units/waiter.pyi b/DrissionPage/_units/waiter.pyi
index d9d4441..f15dedc 100644
--- a/DrissionPage/_units/waiter.pyi
+++ b/DrissionPage/_units/waiter.pyi
@@ -5,7 +5,7 @@
 """
 from typing import Union
 
-from .browser_download_manager import DownloadMission
+from .download_manager import DownloadMission
 from .._elements.chromium_element import ChromiumElement
 from .._pages.chromium_base import ChromiumBase
 from .._pages.chromium_frame import ChromiumFrame