diff --git a/README.md b/README.md
index 6376748..620b4c1 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,60 @@
 # python
+#http://dushu.baidu.com/api/pc/getCatalog?data={"book_id":"4306063500"}  ->所有章节内容(名称，cid），%22 -> "
+#章节内部内容
+#http://dushu.baidu.com/api/pc/getChapterContent?data={"book_id":"4306063500","cid":"4306063500|11348571","need_bookinfo":1}
 
+#通过URL1得到小说全部章节，并且得到cid
+#通过循环拿到每一个cid，cid拼接URL2，从而得到小说内容
+
+#请求URL1只需要一次，在请求URL1之后会有多个章节一起下载，无需异步，同步即可
+#请求URL2，任务多同时跑，需要异步
+
+import requests
+import asyncio
+import aiohttp
+import aiofiles
+import json
+
+"""
+步骤：
+1.同步操作：访问getCatalog 拿到所有章节的cid和名称
+2.异步操作：访问getChapterContent 下载所有的文章内容
+"""
+
+async def aiodownload(cid,b_id,title):
+    data={"book_id":b_id,
+          "cid":f"{b_id}|{cid}",
+          "need_bookinfo":1
+    }
+    data = json.dumps(data)
+    url = f"http://dushu.baidu.com/api/pc/getChapterContent?data={data}"
+
+    async with aiohttp.ClientSession() as session:
+        async with session.get(url) as resp:
+            dic = await resp.json()
+
+            async with aiofiles.open(title,mode="w",encoding="utf-8") as f:
+                await f.write(dic['data']['novel']['content'])#把小说内容写出
+
+
+async def getCatalog(url):
+    resp = requests.get(url)#发送请求
+    #print(resp.text)
+    #print(resp.json())
+    dic=resp.json()
+    tasks = []
+    for item in dic['data']['novel']['items']:  #item对应每一个章节的名称和cid
+        title = item['title']
+        cid = item['cid']
+        #print(cid, title)
+        #准备异步任务
+        tasks.append(aiodownload(cid,b_id,title))
+
+    await asyncio.wait(tasks)
+ 
+
+if __name__ =='__main__':
+    b_id="4306063500"
+    url='http://dushu.baidu.com/api/pc/getCatalog?data={"book_id":"' + b_id + '"}'
+    #getCatalog(url)
+    asyncio.run(getCatalog(url))