diff --git a/DrissionPage/__init__.py b/DrissionPage/__init__.py
index 8631fbb..9d09b17 100644
--- a/DrissionPage/__init__.py
+++ b/DrissionPage/__init__.py
@@ -13,4 +13,4 @@ from ._configs.chromium_options import ChromiumOptions
 from ._configs.session_options import SessionOptions
 
 __all__ = ['ChromiumPage', 'ChromiumOptions', 'SessionOptions', 'SessionPage', 'WebPage', '__version__']
-__version__ = '4.0.0b30'
+__version__ = '4.0.0b31'
diff --git a/DrissionPage/_base/driver.py b/DrissionPage/_base/driver.py
index eae9b8e..2412b6f 100644
--- a/DrissionPage/_base/driver.py
+++ b/DrissionPage/_base/driver.py
@@ -12,6 +12,8 @@ from requests import get
 from websocket import (WebSocketTimeoutException, WebSocketConnectionClosedException, create_connection,
                        WebSocketException)
 
+from ..errors import PageClosedError
+
 
 class Driver(object):
     def __init__(self, tab_id, tab_type, address):
@@ -122,7 +124,7 @@ class Driver(object):
                     self.alert_flag = msg['method'].endswith('Opening')
                 function = self.immediate_event_handlers.get(msg['method'])
                 if function:
-                    Thread(target=function, kwargs=msg['params']).start()
+                    Thread(target=run_function, args=(function, msg['params'])).start()
                     # function(**msg['params'])
                 else:
                     self.event_queue.put(msg)
@@ -159,11 +161,13 @@ class Driver(object):
 
         timeout = kwargs.pop('_timeout', 15)
         result = self._send({'method': _method, 'params': kwargs}, timeout=timeout)
-        if 'result' not in result and 'error' in result:
+        if result is None:
+            return {'error': {'message': 'page closed'}}
+        elif 'result' not in result and 'error' in result:
             return {'error': result['error']['message'], 'type': result.get('type', 'call_method_error'),
                     'method': _method, 'args': kwargs}
-
-        return result['result']
+        else:
+            return result['result']
 
     def start(self):
         """启动连接"""
@@ -190,14 +194,14 @@ class Driver(object):
             self._ws.close()
             self._ws = None
 
-        while not self.event_queue.empty():
-            event = self.event_queue.get_nowait()
-            function = self.event_handlers.get(event['method'])
-            if function:
-                try:
+        try:
+            while not self.event_queue.empty():
+                event = self.event_queue.get_nowait()
+                function = self.event_handlers.get(event['method'])
+                if function:
                     function(**event['params'])
-                except:
-                    pass
+        except:
+            pass
 
         self.event_handlers.clear()
         self.method_results.clear()
@@ -249,3 +253,10 @@ class BrowserDriver(Driver):
     def stop(self):
         super().stop()
         self.browser._on_quit()
+
+
+def run_function(function, kwargs):
+    try:
+        function(**kwargs)
+    except PageClosedError:
+        pass
diff --git a/DrissionPage/_pages/chromium_base.py b/DrissionPage/_pages/chromium_base.py
index 0d51807..1a41abc 100644
--- a/DrissionPage/_pages/chromium_base.py
+++ b/DrissionPage/_pages/chromium_base.py
@@ -479,7 +479,7 @@ class ChromiumBase(BasePage):
         :param script: js文本
         :param args: 参数，按顺序在js文本中对应arguments[0]、arguments[1]...
         :param as_expr: 是否作为表达式运行，为True时args无效
-        :param timeout: js超时时间（秒），为None则使用页面timeouts.script设置
+        :param timeout: js超时时间（秒），为None则使用页面timeouts.script属性值
         :return: 运行的结果
         """
         self.wait.load_complete()
@@ -490,7 +490,7 @@ class ChromiumBase(BasePage):
         :param script: js文本
         :param args: 参数，按顺序在js文本中对应arguments[0]、arguments[1]...
         :param as_expr: 是否作为表达式运行，为True时args无效
-        :param timeout: js超时时间（秒），为None则使用页面timeouts.script设置
+        :param timeout: js超时时间（秒），为None则使用页面timeouts.script属性值
         :return: None
         """
         from threading import Thread
@@ -501,9 +501,9 @@ class ChromiumBase(BasePage):
         """访问url
         :param url: 目标url
         :param show_errmsg: 是否显示和抛出异常
-        :param retry: 重试次数
-        :param interval: 重试间隔（秒）
-        :param timeout: 连接超时时间（秒）
+        :param retry: 重试次数，为None时使用页面对象retry_times属性值
+        :param interval: 重试间隔（秒），为None时使用页面对象retry_interval属性值
+        :param timeout: 连接超时时间（秒），为None时使用页面对象timeouts.page_load属性值
         :return: 目标url是否可用
         """
         retry, interval = self._before_connect(url, retry, interval)
@@ -1154,3 +1154,18 @@ def close_privacy_dialog(page, tid):
 
     except:
         pass
+
+
+def get_mhtml(page, path=None, name=None):
+    """把当前页面保存为mhtml文件
+    :param page: 要保存的页面对象
+    :param path: 保存路径，为None保存在当前路径
+    :param name: 文件名，为None则用title属性值
+    :return: mhtml文本
+    """
+    r = page.run_cdp('Page.captureSnapshot')['data']
+    path = path or '.'
+    name = name or page.title
+    with open(f'{path}{sep}{name}.mhtml', 'w', encoding='utf-8') as f:
+        f.write(r)
+    return r
diff --git a/DrissionPage/_pages/chromium_base.pyi b/DrissionPage/_pages/chromium_base.pyi
index 5781211..abef890 100644
--- a/DrissionPage/_pages/chromium_base.pyi
+++ b/DrissionPage/_pages/chromium_base.pyi
@@ -6,6 +6,7 @@
 from pathlib import Path
 from typing import Union, Tuple, List, Any, Optional, Literal
 
+from .chromium_tab import ChromiumTab
 from .._base.base import BasePage
 from .._base.browser import Browser
 from .._base.driver import Driver
@@ -263,3 +264,6 @@ class Alert(object):
         self.handle_next: Optional[bool] = ...
         self.next_text: str = ...
         self.auto: Optional[bool] = ...
+
+
+def get_mhtml(page: Union[ChromiumPage, ChromiumTab], path: Union[str, Path] = None, name: str = None) -> str: ...
diff --git a/DrissionPage/_pages/chromium_frame.py b/DrissionPage/_pages/chromium_frame.py
index 434942a..f27e0d1 100644
--- a/DrissionPage/_pages/chromium_frame.py
+++ b/DrissionPage/_pages/chromium_frame.py
@@ -205,19 +205,13 @@ class ChromiumFrame(ChromiumBase):
 
     def _onInspectorDetached(self, **kwargs):
         """异域转同域或退出"""
-        try:
-            self._reload()
-        except PageClosedError:
-            pass
+        self._reload()
 
     def _onFrameDetached(self, **kwargs):
         """同域变异域"""
         self.browser._frames.pop(kwargs['frameId'], None)
         if kwargs['frameId'] == self._frame_id:
-            try:
-                self._reload()
-            except PageClosedError:
-                pass
+            self._reload()
 
     # ----------挂件----------
 
diff --git a/DrissionPage/_pages/chromium_page.py b/DrissionPage/_pages/chromium_page.py
index e01419a..9de3d29 100644
--- a/DrissionPage/_pages/chromium_page.py
+++ b/DrissionPage/_pages/chromium_page.py
@@ -11,7 +11,7 @@ from requests import get
 from .._base.browser import Browser
 from .._functions.browser import connect_browser
 from .._configs.chromium_options import ChromiumOptions
-from .._pages.chromium_base import ChromiumBase, Timeout
+from .._pages.chromium_base import ChromiumBase, get_mhtml, Timeout
 from .._pages.chromium_tab import ChromiumTab
 from .._units.setter import ChromiumPageSetter
 from .._units.waiter import PageWaiter
@@ -66,12 +66,13 @@ class ChromiumPage(ChromiumBase):
             ws = get(f'http://{self._chromium_options.address}/json/version', headers={'Connection': 'close'})
             if not ws:
                 raise BrowserConnectError('\n浏览器连接失败，请检查是否启用全局代理。如是，须设置不代理127.0.0.1地址。')
-        except :
+            ws = ws.json()['webSocketDebuggerUrl'].split('/')[-1]
+        except KeyError:
+            raise BrowserConnectError('浏览器版本太旧，请升级。')
+        except:
             raise BrowserConnectError('\n浏览器连接失败，请检查是否启用全局代理。如是，须设置不代理127.0.0.1地址。')
 
-        ws = ws.json()['webSocketDebuggerUrl'].split('/')[-1]
         self._browser = Browser(self._chromium_options.address, ws, self)
-
         if (is_exist and self._chromium_options._headless is False and
                 'headless' in self._browser.run_cdp('Browser.getVersion')['userAgent'].lower()):
             self._browser.quit(3)
@@ -140,6 +141,14 @@ class ChromiumPage(ChromiumBase):
         """返回浏览器进程id"""
         return self.browser.process_id
 
+    def save(self, path=None, name=None):
+        """把当前页面保存为mhtml文件
+        :param path: 保存路径，为None保存在当前路径
+        :param name: 文件名，为None则用title属性值
+        :return: mhtml文本
+        """
+        return get_mhtml(self, path, name)
+
     def get_tab(self, id_or_num=None):
         """获取一个标签页对象
         :param id_or_num: 要获取的标签页id或序号，为None时获取当前tab，序号不是视觉排列顺序，而是激活顺序
diff --git a/DrissionPage/_pages/chromium_page.pyi b/DrissionPage/_pages/chromium_page.pyi
index 49e519b..ac29e10 100644
--- a/DrissionPage/_pages/chromium_page.pyi
+++ b/DrissionPage/_pages/chromium_page.pyi
@@ -3,6 +3,7 @@
 @Author  :   g1879
 @Contact :   g1879@qq.com
 """
+from pathlib import Path
 from typing import Union, Tuple, List, Optional
 
 from .._base.browser import Browser
@@ -54,6 +55,8 @@ class ChromiumPage(ChromiumBase):
     @property
     def set(self) -> ChromiumPageSetter: ...
 
+    def save(self, path: Union[str, Path] = None, name: str = None) -> str: ...
+
     def get_tab(self, tab_id: Union[str, ChromiumTab, int] = None) -> ChromiumTab: ...
 
     def find_tabs(self, title: str = None, url: str = None,
diff --git a/DrissionPage/_pages/chromium_tab.py b/DrissionPage/_pages/chromium_tab.py
index dacf435..4038abd 100644
--- a/DrissionPage/_pages/chromium_tab.py
+++ b/DrissionPage/_pages/chromium_tab.py
@@ -6,9 +6,9 @@
 from copy import copy
 
 from .._base.base import BasePage
-from .._functions.web import set_session_cookies, set_browser_cookies
 from .._configs.session_options import SessionOptions
-from .._pages.chromium_base import ChromiumBase
+from .._functions.web import set_session_cookies, set_browser_cookies
+from .._pages.chromium_base import ChromiumBase, get_mhtml
 from .._pages.session_page import SessionPage
 from .._units.setter import TabSetter, WebPageTabSetter
 from .._units.waiter import TabWaiter
@@ -58,6 +58,14 @@ class ChromiumTab(ChromiumBase):
             self._wait = TabWaiter(self)
         return self._wait
 
+    def save(self, path=None, name=None):
+        """把当前页面保存为mhtml文件
+        :param path: 保存路径，为None保存在当前路径
+        :param name: 文件名，为None则用title属性值
+        :return: mhtml文本
+        """
+        return get_mhtml(self, path, name)
+
     def __repr__(self):
         return f'<ChromiumTab browser_id={self.browser.id} tab_id={self.tab_id}>'
 
@@ -191,9 +199,9 @@ class WebPageTab(SessionPage, ChromiumTab, BasePage):
         """跳转到一个url
         :param url: 目标url
         :param show_errmsg: 是否显示和抛出异常
-        :param retry: 重试次数
-        :param interval: 重试间隔（秒）
-        :param timeout: 连接超时时间（秒）
+        :param retry: 重试次数，为None时使用页面对象retry_times属性值
+        :param interval: 重试间隔（秒），为None时使用页面对象retry_interval属性值
+        :param timeout: 连接超时时间（秒），为None时使用页面对象timeouts.page_load属性值
         :param kwargs: 连接参数，s模式专用
         :return: url是否可用，d模式返回None时表示不确定
         """
diff --git a/DrissionPage/_pages/chromium_tab.pyi b/DrissionPage/_pages/chromium_tab.pyi
index 327b037..ec3798a 100644
--- a/DrissionPage/_pages/chromium_tab.pyi
+++ b/DrissionPage/_pages/chromium_tab.pyi
@@ -3,6 +3,7 @@
 @Author  :   g1879
 @Contact :   g1879@qq.com
 """
+from pathlib import Path
 from typing import Union, Tuple, Any, List, Optional
 
 from requests import Session, Response
@@ -41,6 +42,8 @@ class ChromiumTab(ChromiumBase):
     @property
     def wait(self) -> TabWaiter: ...
 
+    def save(self, path: Union[str, Path] = None, name: str = None) -> str: ...
+
 
 class WebPageTab(SessionPage, ChromiumTab):
     def __init__(self, page: WebPage, tab_id: str):
diff --git a/DrissionPage/_pages/session_page.py b/DrissionPage/_pages/session_page.py
index 0170a1c..0dce0af 100644
--- a/DrissionPage/_pages/session_page.py
+++ b/DrissionPage/_pages/session_page.py
@@ -141,9 +141,9 @@ class SessionPage(BasePage):
         """用get方式跳转到url，可输入文件路径
         :param url: 目标url，可指定本地文件路径
         :param show_errmsg: 是否显示和抛出异常
-        :param retry: 重试次数
-        :param interval: 重试间隔（秒）
-        :param timeout: 连接超时时间（秒）
+        :param retry: 重试次数，为None时使用页面对象retry_times属性值
+        :param interval: 重试间隔（秒），为None时使用页面对象retry_interval属性值
+        :param timeout: 连接超时时间（秒），为None时使用页面对象timeout属性值
         :param kwargs: 连接参数
         :return: url是否可用
         """
diff --git a/DrissionPage/_pages/web_page.py b/DrissionPage/_pages/web_page.py
index 22940e2..e20931b 100644
--- a/DrissionPage/_pages/web_page.py
+++ b/DrissionPage/_pages/web_page.py
@@ -152,9 +152,9 @@ class WebPage(SessionPage, ChromiumPage, BasePage):
         """跳转到一个url
         :param url: 目标url
         :param show_errmsg: 是否显示和抛出异常
-        :param retry: 重试次数
-        :param interval: 重试间隔（秒）
-        :param timeout: 连接超时时间（秒）
+        :param retry: 重试次数，为None时使用页面对象retry_times属性值
+        :param interval: 重试间隔（秒），为None时使用页面对象retry_interval属性值
+        :param timeout: 连接超时时间（秒），为None时使用页面对象timeouts.page_load属性值
         :param kwargs: 连接参数，s模式专用
         :return: url是否可用，d模式返回None时表示不确定
         """
diff --git a/DrissionPage/_units/listener.py b/DrissionPage/_units/listener.py
index d18759f..d576480 100644
--- a/DrissionPage/_units/listener.py
+++ b/DrissionPage/_units/listener.py
@@ -295,7 +295,9 @@ class Listener(object):
         packet = self._request_ids.get(rid)
         if packet:
             r = self._driver.run('Network.getResponseBody', requestId=rid)
-            if 'body' in r:
+            if 'error' in r:
+                return
+            elif 'body' in r:
                 packet._raw_body = r['body']
                 packet._base64_body = r['base64Encoded']
             else:
diff --git a/DrissionPage/_units/screencast.py b/DrissionPage/_units/screencast.py
index 086e14c..ab60b83 100644
--- a/DrissionPage/_units/screencast.py
+++ b/DrissionPage/_units/screencast.py
@@ -6,16 +6,17 @@
 from base64 import b64decode
 from os.path import sep
 from pathlib import Path
+from random import randint
+from shutil import rmtree
 from threading import Thread
 from time import sleep, time
 
-from .._functions.tools import clean_folder
-
 
 class Screencast(object):
     def __init__(self, page):
         self._page = page
         self._path = None
+        self._tmp_path = None
         self._running = False
         self._enable = False
         self._mode = 'video'
@@ -33,9 +34,11 @@ class Screencast(object):
         self.set_save_path(save_path)
         if self._path is None:
             raise ValueError('save_path必须设置。')
-        tmp = self._path / 'tmp'
-        tmp.mkdir(parents=True, exist_ok=True)
-        clean_folder(tmp)
+
+        if self._mode in ('frugal_video', 'video'):
+            self._tmp_path = self._path / f'screencast_tmp_{time()}_{randint(0, 100)}'
+            self._tmp_path.mkdir(parents=True, exist_ok=True)
+
         if self._mode.startswith('frugal'):
             self._page.driver.set_callback('Page.screencastFrame', self._onScreencastFrame)
             self._page.run_cdp('Page.startScreencast', everyNthFrame=1, quality=100)
@@ -45,7 +48,7 @@ class Screencast(object):
             self._enable = True
             Thread(target=self._run).start()
 
-        else:
+        else:  # js模式
             js = '''
             async function () {
                 stream = await navigator.mediaDevices.getDisplayMedia({video: true, audio: true})
@@ -104,7 +107,7 @@ class Screencast(object):
         if self._mode.endswith('imgs'):
             return str(Path(self._path).absolute())
 
-        if not str(video_name).isascii() or not str(self._path).isascii():
+        if not str(self._path).isascii():
             raise TypeError('转换成视频仅支持英文路径和文件名。')
 
         try:
@@ -113,7 +116,7 @@ class Screencast(object):
         except ModuleNotFoundError:
             raise ModuleNotFoundError('请先安装cv2，pip install opencv-python')
 
-        pic_list = Path(self._path).glob('*.jpg')
+        pic_list = Path(self._tmp_path or self._path).glob('*.jpg')
         img = imread(str(next(pic_list)))
         imgInfo = img.shape
         size = (imgInfo[1], imgInfo[0])
@@ -124,7 +127,8 @@ class Screencast(object):
             img = imread(str(i))
             videoWrite.write(img)
 
-        clean_folder(self._path, ignore=(name,))
+        rmtree(self._tmp_path)
+        self._tmp_path = None
         return f'{self._path}{sep}{name}'
 
     def set_save_path(self, save_path=None):
@@ -142,14 +146,16 @@ class Screencast(object):
     def _run(self):
         """非节俭模式运行方法"""
         self._running = True
+        path = self._tmp_path or self._path
         while self._enable:
-            self._page.get_screenshot(path=self._path, name=f'{time()}.jpg')
+            self._page.get_screenshot(path=path, name=f'{time()}.jpg')
             sleep(.04)
         self._running = False
 
     def _onScreencastFrame(self, **kwargs):
         """节俭模式运行方法"""
-        with open(f'{self._path}\\{kwargs["metadata"]["timestamp"]}.jpg', 'wb') as f:
+        path = self._tmp_path or self._path
+        with open(f'{path}{sep}{kwargs["metadata"]["timestamp"]}.jpg', 'wb') as f:
             f.write(b64decode(kwargs['data']))
         self._page.run_cdp('Page.screencastFrameAck', sessionId=kwargs['sessionId'])
 
@@ -159,16 +165,21 @@ class ScreencastMode(object):
         self._screencast = screencast
 
     def video_mode(self):
+        """持续视频模式，生成的视频没有声音"""
         self._screencast._mode = 'video'
 
     def frugal_video_mode(self):
+        """设置节俭视频模式，页面有变化时才录制，生成的视频没有声音"""
         self._screencast._mode = 'frugal_video'
 
     def js_video_mode(self):
+        """设置使用js录制视频模式，可生成有声音的视频，但需要手动启动"""
         self._screencast._mode = 'js_video'
 
     def frugal_imgs_mode(self):
+        """设置节俭视频模式，页面有变化时才截图"""
         self._screencast._mode = 'frugal_imgs'
 
     def imgs_mode(self):
+        """设置图片模式，持续对页面进行截图"""
         self._screencast._mode = 'imgs'
diff --git a/DrissionPage/_units/screencast.pyi b/DrissionPage/_units/screencast.pyi
index 6c23592..c185375 100644
--- a/DrissionPage/_units/screencast.pyi
+++ b/DrissionPage/_units/screencast.pyi
@@ -13,6 +13,7 @@ class Screencast(object):
     def __init__(self, page: ChromiumBase):
         self._page: ChromiumBase = ...
         self._path: Path = ...
+        self._tmp_path: Path = ...
         self._running: bool = ...
         self._enable: bool = ...
         self._mode: str = ...
diff --git a/setup.py b/setup.py
index 784d826..713e0f2 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@ with open("README.md", "r", encoding='utf-8') as fh:
 
 setup(
     name="DrissionPage",
-    version="4.0.0b30",
+    version="4.0.0b31",
     author="g1879",
     author_email="g1879@qq.com",
     description="Python based web automation tool. It can control the browser and send and receive data packets.",