diff --git a/doc/en/mobilizer.md b/doc/en/mobilizer.md
index c3ec19e..a3297fc 100644
--- a/doc/en/mobilizer.md
+++ b/doc/en/mobilizer.md
@@ -18,7 +18,16 @@ So, the mobilizer in the `feed settings` dialog is only use for download when re
 
 Note : Mobilizer is removing some unimportant elements on the page (head, side and bottom of the navigation or link) and re-layout, leaving only the text part. General mobilizer get the article is calculated by algorithm, so can not guarantee 100% correct. Mature mobilizer resolution is more accurate, and built-in is worse.
 
-# Switch feed/web view manually
+# Feed & Web
+In the top right corner of the article page, it displays `Feed/Web`. Where `Feed` represents the article content from RSS, `Web` represents the article content from the source link.
+
+The content of the web is re-crawled via source links and parsed by Mobilizer. In general, the body content can be parsed correctly, but it may be parsed incorrectly, return the wrong content.
+
+## Current is `Feed` or `Web`?
+- When `Feed` is the accent color, it means the current content is `Web`.
+- When `Web` is the accent color, it means the current content is `Feed`.
+
+## Switch feed/web view manually
 Once enter article page, how can I switch feed/web view manually?
 
 ### 1. Tap feed/web link
diff --git a/doc/zh/mobilizer.md b/doc/zh/mobilizer.md
index dcac82f..d59c05b 100644
--- a/doc/zh/mobilizer.md
+++ b/doc/zh/mobilizer.md
@@ -17,7 +17,16 @@
 
 注：Mobilizer：去除网页上一些不重要的元素（头部，侧边及底部的导航或者链接）并重新排版，仅保留正文部分。一般 Mobilizer 得到的文章是由程序算法计算解析得出的，所以不能保证百分百的正确。成熟的 Mobilizer 在正确性上会做的更好，而自带的会差一些。
 
-# 手动切换 feed/web 显示
+# Feed 和 Web 显示
+在文章界面的右上角，显示着 `Feed/Web`。其中 `Feed` 代表文章内容来自RSS，`Web` 代表文章内容来自源链接。
+
+Web的内容通过源链接重新抓取，并通过Mobilizer解析。一般情况下可以正确解析出正文内容，但也可能解析错误，得到非正文内容。
+
+## 当前是 `Feed` 还是 `Web`？
+- 当 `Feed` 为强调色时，说明当前内容是 `Web`。
+- 当 `Web` 为强调色时，说明当前内容是 `Feed`。
+
+## 手动切换 feed/web 显示
 怎么在文章界面手动切换 feed/web 显示？
 
 ### 1. 点击 feed/web 链接