diff --git a/DrissionPage/chromium_base.py b/DrissionPage/chromium_base.py
index 4ca59dc..1e4cb09 100644
--- a/DrissionPage/chromium_base.py
+++ b/DrissionPage/chromium_base.py
@@ -19,8 +19,8 @@ from .commons.constants import HANDLE_ALERT_METHOD, ERROR, NoneElement
 from .commons.locator import get_loc
 from .commons.tools import get_usable_path, clean_folder
 from .commons.web import set_browser_cookies
-from .errors import ContextLossError, ElementLossError, AlertExistsError, CallMethodError, TabClosedError, \
-    NoRectError, BrowserConnectError
+from .errors import ContextLossError, ElementLossError, AlertExistsError, CDPError, TabClosedError, \
+    NoRectError, BrowserConnectError, GetDocumentError
 from .network_listener import NetworkListener
 from .session_element import make_session_ele
 
@@ -132,7 +132,8 @@ class ChromiumBase(BasePage):
                         self._debug_recorder.add_data((perf_counter(), '信息', f'root_id：{self._root_id}'))
                     break
 
-                except Exception:
+                except CDPError as e:
+                    err = e
                     if self._debug:
                         print('重试获取document')
                         if self._debug_recorder:
@@ -141,7 +142,9 @@ class ChromiumBase(BasePage):
                     sleep(.1)
 
             else:
-                raise RuntimeError('获取document失败。')
+                txt = f'请检查是否创建了过多页面对象同时操作浏览器。\n如无法解决，请把以下信息报告作者。\n{err._info}\n' \
+                      f'报告网址：https://gitee.com/g1879/DrissionPage/issues'
+                raise GetDocumentError(txt)
 
             if self._debug:
                 print('获取document结束')
@@ -399,7 +402,7 @@ class ChromiumBase(BasePage):
         elif error in ('Node does not have a layout object', 'Could not compute box model.'):
             raise NoRectError
         elif r['type'] == 'call_method_error':
-            raise CallMethodError(f'\n错误：{r["error"]}\nmethod：{r["method"]}\nargs：{r["args"]}')
+            raise CDPError(f'\n错误：{r["error"]}\nmethod：{r["method"]}\nargs：{r["args"]}')
         else:
             raise RuntimeError(r)
 
diff --git a/DrissionPage/chromium_driver.py b/DrissionPage/chromium_driver.py
index 24dd416..9d053f3 100644
--- a/DrissionPage/chromium_driver.py
+++ b/DrissionPage/chromium_driver.py
@@ -11,7 +11,7 @@ from threading import Thread, Event
 from websocket import WebSocketTimeoutException, WebSocketException, WebSocketConnectionClosedException, \
     create_connection
 
-from .errors import CallMethodError
+from .errors import CDPError
 
 
 class GenericAttr(object):
@@ -183,7 +183,7 @@ class ChromiumDriver(object):
             self.start()
             # raise RuntimeError("不能在启动前调用方法。")
         if args:
-            raise CallMethodError("参数必须是key=value形式。")
+            raise CDPError("参数必须是key=value形式。")
 
         if self._stopped.is_set():
             return {'error': 'tab closed', 'type': 'tab_closed'}
diff --git a/DrissionPage/chromium_element.py b/DrissionPage/chromium_element.py
index acf78e3..734477f 100644
--- a/DrissionPage/chromium_element.py
+++ b/DrissionPage/chromium_element.py
@@ -14,7 +14,7 @@ from .commons.keys import keys_to_typing, keyDescriptionForString, keyDefinition
 from .commons.locator import get_loc
 from .commons.web import make_absolute_link, get_ele_txt, format_html, is_js_func, location_in_viewport, offset_scroll
 from .errors import ContextLossError, ElementLossError, JavaScriptError, NoRectError, ElementNotFoundError, \
-    CallMethodError, NoResourceError, CanNotClickError
+    CDPError, NoResourceError, CanNotClickError
 from .session_element import make_session_ele
 
 
@@ -99,7 +99,7 @@ class ChromiumElement(DrissionElement):
         try:
             attrs = self.page.run_cdp('DOM.getAttributes', nodeId=self._node_id)['attributes']
             return {attrs[i]: attrs[i + 1] for i in range(0, len(attrs), 2)}
-        except CallMethodError:  # 文档根元素不能调用此方法
+        except CDPError:  # 文档根元素不能调用此方法
             return {}
 
     @property
@@ -464,7 +464,7 @@ class ChromiumElement(DrissionElement):
             try:
                 result = self.page.run_cdp('Page.getResourceContent', frameId=frame, url=src)
                 break
-            except CallMethodError:
+            except CDPError:
                 sleep(.1)
 
         if not result:
@@ -1424,7 +1424,7 @@ class ChromiumElementStates(object):
         lx, ly = self._ele.locations.click_point
         try:
             r = self._ele.page.run_cdp('DOM.getNodeForLocation', x=lx, y=ly)
-        except CallMethodError:
+        except CDPError:
             return False
 
         if r.get('backendNodeId') != self._ele.ids.backend_id:
diff --git a/DrissionPage/chromium_page.py b/DrissionPage/chromium_page.py
index 60a40c6..0f41258 100644
--- a/DrissionPage/chromium_page.py
+++ b/DrissionPage/chromium_page.py
@@ -18,7 +18,7 @@ from .commons.browser import connect_browser
 from .commons.tools import port_is_using, get_usable_path
 from .commons.web import set_session_cookies
 from .configs.chromium_options import ChromiumOptions
-from .errors import CallMethodError, BrowserConnectError
+from .errors import CDPError, BrowserConnectError
 from .session_page import DownloadSetter
 
 
@@ -106,7 +106,7 @@ class ChromiumPage(ChromiumBase):
         self._main_tab = self.tab_id
         try:
             self.download_set.by_browser()
-        except CallMethodError:
+        except CDPError:
             pass
 
         self._process_id = None
@@ -536,7 +536,7 @@ class ChromiumDownloadSetter(DownloadSetter):
         try:
             self._page.browser_driver.Browser.setDownloadBehavior(behavior='allowAndName', downloadPath=path,
                                                                   eventsEnabled=True)
-        except CallMethodError:
+        except CDPError:
             warn('\n您的浏览器版本太低，用新标签页下载文件可能崩溃，建议升级。')
             self._page.run_cdp('Page.setDownloadBehavior', behavior='allowAndName', downloadPath=path)
 
@@ -549,7 +549,7 @@ class ChromiumDownloadSetter(DownloadSetter):
                                                                   downloadPath=self._page.download_path)
             self._page.browser_driver.Browser.downloadWillBegin = self._download_will_begin
             self._page.browser_driver.Browser.downloadProgress = self._download_progress
-        except CallMethodError:
+        except CDPError:
             self._page.driver.Page.setDownloadBehavior(behavior='allowAndName', downloadPath=self._page.download_path)
             self._page.driver.Page.downloadWillBegin = self._download_will_begin
             self._page.driver.Page.downloadProgress = self._download_progress
@@ -562,7 +562,7 @@ class ChromiumDownloadSetter(DownloadSetter):
             self._page.browser_driver.Browser.setDownloadBehavior(behavior='deny', eventsEnabled=True)
             self._page.browser_driver.Browser.downloadWillBegin = self._download_by_DownloadKit
             # self._page.browser_driver.Browser.downloadProgress = None
-        except CallMethodError:
+        except CDPError:
             raise RuntimeError('您的浏览器版本太低，不支持此方法，请升级。')
 
         self._behavior = 'deny'
diff --git a/DrissionPage/errors.py b/DrissionPage/errors.py
index 3bcfca0..4eabfa6 100644
--- a/DrissionPage/errors.py
+++ b/DrissionPage/errors.py
@@ -24,7 +24,7 @@ class ElementLossError(BaseError):
     _info = '元素对象因刷新已失效。'
 
 
-class CallMethodError(BaseError):
+class CDPError(BaseError):
     _info = '方法调用错误。'
 
 
@@ -54,3 +54,7 @@ class NoResourceError(BaseError):
 
 class CanNotClickError(BaseError):
     _info = '该元素无法滚动到视口或被遮挡，无法点击。'
+
+
+class GetDocumentError(BaseError):
+    _info = '获取文档失败。'
diff --git a/DrissionPage/network_listener.py b/DrissionPage/network_listener.py
index 2e0d7ff..ccbf43e 100644
--- a/DrissionPage/network_listener.py
+++ b/DrissionPage/network_listener.py
@@ -8,7 +8,7 @@ from time import perf_counter, sleep
 
 from requests.structures import CaseInsensitiveDict
 
-from .errors import CallMethodError
+from .errors import CDPError
 
 
 class NetworkListener(object):
@@ -182,7 +182,7 @@ class NetworkListener(object):
                 r = self._page.run_cdp('Network.getResponseBody', requestId=request_id)
                 body = r['body']
                 is_base64 = r['base64Encoded']
-            except CallMethodError:
+            except CDPError:
                 body = ''
                 is_base64 = False
 
diff --git a/DrissionPage/web_page.py b/DrissionPage/web_page.py
index 2315ea7..f84dd19 100644
--- a/DrissionPage/web_page.py
+++ b/DrissionPage/web_page.py
@@ -16,7 +16,7 @@ from .chromium_tab import WebPageTab
 from .commons.web import set_session_cookies, set_browser_cookies
 from .configs.chromium_options import ChromiumOptions
 from .configs.session_options import SessionOptions
-from .errors import CallMethodError
+from .errors import CDPError
 from .session_page import SessionPage, SessionPageSetter
 
 
@@ -526,7 +526,7 @@ class WebPageDownloadSetter(ChromiumDownloadSetter):
             try:
                 self._page.browser_driver.Browser.setDownloadBehavior(behavior=self._behavior, downloadPath=path,
                                                                       eventsEnabled=True)
-            except CallMethodError:
+            except CDPError:
                 warn('\n您的浏览器版本太低，用新标签页下载文件可能崩溃，建议升级。')
                 self._page.run_cdp('Page.setDownloadBehavior', behavior=self._behavior, downloadPath=path)
 
@@ -541,7 +541,7 @@ class WebPageDownloadSetter(ChromiumDownloadSetter):
             self._page.browser_driver.Browser.downloadWillBegin = self._download_will_begin
             self._page.browser_driver.Browser.downloadProgress = self._download_progress
 
-        except CallMethodError:
+        except CDPError:
             warn('\n您的浏览器版本太低，用新标签页下载文件可能崩溃，建议升级。')
             self._page.driver.Page.setDownloadBehavior(behavior='allowAndName', downloadPath=self._page.download_path)
             self._page.driver.Page.downloadWillBegin = self._download_will_begin
@@ -556,7 +556,7 @@ class WebPageDownloadSetter(ChromiumDownloadSetter):
                 self._page.browser_driver.Browser.setDownloadBehavior(behavior='deny', eventsEnabled=True)
                 self._page.browser_driver.Browser.downloadWillBegin = self._download_by_DownloadKit
                 # self._page.browser_driver.Browser.downloadProgress = None
-            except CallMethodError:
+            except CDPError:
                 raise RuntimeError('您的浏览器版本太低，不支持此方法，请升级。')
 
         self._behavior = 'deny'