diff --git a/README.md b/README.md
index d6739d2..e332276 100644
--- a/README.md
+++ b/README.md
@@ -18,12 +18,12 @@
 > 下面不支持的项目，相关的代码架构已经搭建好，只需要实现对应的方法即可，欢迎大家提交PR
 
 | 平台  | 关键词搜索 | 指定帖子ID爬取 | 二级评论 | 指定创作者主页 | 登录态缓存 | IP代理池 |
-|-----|-------|----------|------|--------|-------|-------|
-| 小红书 | ✅     | ✅        | ✅    | ✅      | ✅     | ✅     |
-| 抖音  | ✅     | ✅        | ❌    | ✅       | ✅     | ✅     |
-| 快手  | ✅     | ✅        | ❌    | ❌      | ✅     | ✅     |
-| B 站 | ✅     | ✅        | ✅    | ❌      | ✅     | ✅     |
-| 微博  | ✅     | ✅        | ❌    | ❌      | ✅     | ✅     |
+|-----|-------|----------|-----|--------|-------|-------|
+| 小红书 | ✅     | ✅        | ✅   | ✅      | ✅     | ✅     |
+| 抖音  | ✅     | ✅        | ✅    | ✅       | ✅     | ✅     |
+| 快手  | ✅     | ✅        | ❌   | ❌      | ✅     | ✅     |
+| B 站 | ✅     | ✅        | ✅   | ❌      | ✅     | ✅     |
+| 微博  | ✅     | ✅        | ❌   | ❌      | ✅     | ✅     |
 
 
 ## 使用方法
diff --git a/media_platform/douyin/client.py b/media_platform/douyin/client.py
index a8596d3..ede6049 100644
--- a/media_platform/douyin/client.py
+++ b/media_platform/douyin/client.py
@@ -165,6 +165,23 @@ class DOUYINClient(AbstractApiClient):
         headers["Referer"] = urllib.parse.quote(referer_url, safe=':/')
         return await self.get(uri, params)
 
+    async def get_sub_comments(self, comment_id: str, cursor: int = 0):
+        """
+            获取子评论
+        """
+        uri = "/aweme/v1/web/comment/list/reply/"
+        params = {
+            'comment_id': comment_id,
+            "cursor": cursor,
+            "count": 20,
+            "item_type": 0,
+        }
+        keywords = request_keyword_var.get()
+        referer_url = "https://www.douyin.com/search/" + keywords + '?aid=3a3cec5a-9e27-4040-b6aa-ef548c2c1138&publish_time=0&sort_type=0&source=search_history&type=general'
+        headers = copy.copy(self.headers)
+        headers["Referer"] = urllib.parse.quote(referer_url, safe=':/')
+        return await self.get(uri, params)
+
     async def get_aweme_all_comments(
             self,
             aweme_id: str,
@@ -197,7 +214,27 @@ class DOUYINClient(AbstractApiClient):
             await asyncio.sleep(crawl_interval)
             if not is_fetch_sub_comments:
                 continue
-            # todo fetch sub comments
+            # 获取二级评论
+            for comment in comments:
+                reply_comment_total = comment.get("reply_comment_total")
+
+                if reply_comment_total > 0:
+                    comment_id = comment.get("cid")
+                    sub_comments_has_more = 1
+                    sub_comments_cursor = 0
+
+                    while sub_comments_has_more:
+                        sub_comments_res = await self.get_sub_comments(comment_id, sub_comments_cursor)
+                        sub_comments_has_more = sub_comments_res.get("has_more", 0)
+                        sub_comments_cursor = sub_comments_res.get("cursor", 0)
+                        sub_comments = sub_comments_res.get("comments", [])
+
+                        if not sub_comments:
+                            continue
+                        result.extend(sub_comments)
+                        if callback:  # 如果有回调函数，就执行回调函数
+                            await callback(aweme_id, sub_comments)
+                        await asyncio.sleep(crawl_interval)
         return result
 
     async def get_user_info(self, sec_user_id: str):
diff --git a/media_platform/douyin/core.py b/media_platform/douyin/core.py
index d97314a..9823baa 100644
--- a/media_platform/douyin/core.py
+++ b/media_platform/douyin/core.py
@@ -177,8 +177,8 @@ class DouYinCrawler(AbstractCrawler):
                 await self.dy_client.get_aweme_all_comments(
                     aweme_id=aweme_id,
                     crawl_interval=random.random(),
+                    is_fetch_sub_comments=config.ENABLE_GET_SUB_COMMENTS,
                     callback=douyin_store.batch_update_dy_aweme_comments
-
                 )
                 utils.logger.info(
                     f"[DouYinCrawler.get_comments] aweme_id: {aweme_id} comments have all been obtained and filtered ...")