diff --git a/README.md b/README.md
index cbd18e0..693e893 100644
--- a/README.md
+++ b/README.md
@@ -109,6 +109,7 @@ pip how selenium
 from selenium import webdriver
 from selenium.webdriver.chrome.options import Options
 chrome_options = Options()
+# chrome_options.add_argument('lang=zh_CN.UTF-8')	# 设置中文
 chrome_options.add_argument('--headless')  # 无界面
 chrome_options.add_argument('--no-sandbox')  # 解决DevToolsActivePort文件不存在报错问题
 chrome_options.add_argument('--disable-gpu')   # 禁用GPU硬件加速。如果软件渲染器没有就位，则GPU进程将不会启动。
@@ -149,9 +150,17 @@ html1 = etree.parse('test.html',etree.HTMLParser(encoding='utf-8'))
 
 ```
 
-### ChromeDriver
+请求头，cookie等
 
-下载 [ChromeDriver](https://chromedriver.chromium.org/home) 放到 python 根目录就行
+```python
+# 访问 https://httpbin.org/get?show_env=1 可以返回当前浏览器的请求信息
+options.add_argument('lang=zh_CN.UTF-8')
+
+```
+
+ChromeDriver
+
+下载 [ChromeDriver](https://chromedriver.chromium.org/home) 放到当前目录就行(如果是放在 python 根目录可以不用在实例化 selenium 时指定chromedriver 路径)
 
 ### Redis
 
@@ -199,4 +208,4 @@ redisconn = redis.Redis(host = '127.0.0.1', port = '6379', password = 'x', db =
 
 11，[如何理解Python装饰器？- 知乎](https://www.zhihu.com/question/26930016/answer/360300235)
 
-12，
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+12，[【自动化】selenium设置请求头](https://www.jianshu.com/p/419eb4e00963)
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diff --git a/downloader.py b/downloader.py
index 06e236b..2bba65b 100644
--- a/downloader.py
+++ b/downloader.py
@@ -3,23 +3,25 @@
 from selenium import webdriver
 from selenium.webdriver.chrome.options import Options
 from lxml import etree
+import random
+import settings
 
 headers = {
-    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36'
+    'User-Agent': random.choice(settings.USER_AGENT)
 }
 
 def getsource(url):
-    init = Options()
+    initChrome = Options()
 
-    init.add_argument('--no-sandbox')
-    init.add_argument('--headless')
-    init.add_argument('--disable-gpu')
-    init.add_argument("disable-cache")
-    init.add_argument('disable-infobars')
-    init.add_argument('log-level=3')    # INFO = 0 WARNING = 1 LOG_ERROR = 2 LOG_FATAL = 3 default is 0
-    init.add_experimental_option("excludeSwitches",['enable-automation','enable-logging'])
+    initChrome.add_argument('--no-sandbox')
+    initChrome.add_argument('--headless')
+    initChrome.add_argument('--disable-gpu')
+    initChrome.add_argument("disable-cache")
+    initChrome.add_argument('disable-infobars')
+    initChrome.add_argument('log-level=3')    # INFO = 0 WARNING = 1 LOG_ERROR = 2 LOG_FATAL = 3 default is 0
+    initChrome.add_experimental_option("excludeSwitches",['enable-automation','enable-logging'])
 
-    driver = webdriver.Chrome(chrome_options = init)
+    driver = webdriver.Chrome(chrome_options = initChrome, executable_path = './chromedriver.exe')
     driver.implicitly_wait(10)
     driver.get(url)
 
diff --git a/settings.py b/settings.py
index 01db6e4..37dfb46 100644
--- a/settings.py
+++ b/settings.py
@@ -28,4 +28,12 @@ FILEPATH = {
 REDIS_HOST = 'tencentCloud'
 REDIS_PORT = '6379'
 REDIS_PASSWORD = 'root'
-REDIS_LISTNAME = "urlList"
\ No newline at end of file
+REDIS_LISTNAME = "urlList"
+
+# 下载器相关配置
+USER_AGENT = [
+    'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:97.0) Gecko/20100101 Firefox/97.0',
+    'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2486.0 Safari/537.36 Edge/13.10586',
+    'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36',
+    'Mozilla/5.0 (Windows NT 10.0; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0'
+]
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