diff --git a/README.md b/README.md
index 8711f5d..38da9a4 100644
--- a/README.md
+++ b/README.md
@@ -68,6 +68,10 @@ disqusShortname = "xxxxxx"
     katex = true
 ```
 
+This option enables the KaTeX auto-render extension. To render block math, use `$$ ... $$`. For inline math, use `\\( ... \\)`. For more details, please refer to https://github.com/KaTeX/KaTeX/blob/v0.7.1/contrib/auto-render/auto-render.js#L73 .
+
+### Others
+
 For other configuration variables, visit [Hugo documentation](https://gohugo.io/overview/configuration/#configuration-variables).
 
 ## Post Params