diff --git a/docs/en/parameter.md b/docs/en/parameter.md
index 2407c06362..24d629963b 100644
--- a/docs/en/parameter.md
+++ b/docs/en/parameter.md
@@ -74,7 +74,13 @@ Output Sci-hub link in scientific journal routes, this supports major journals o
 
 -   scihub: set to any value
 
-举例: <https://rsshub.app/pnas/latest?scihub=1>
+Eg: <https://rsshub.app/pnas/latest?scihub=1>
+
+## Conversion between Traditional and Simplified Chinese
+
+-   opencc: s2t (Simplified Chinese to Traditional Chinese)、t2s (Traditional Chinese to Simplified Chinese), other optional values refer to [OpenCC - Configurations](https://github.com/BYVoid/OpenCC#configurations-%E9%85%8D%E7%BD%AE%E6%96%87%E4%BB%B6)
+
+Eg: <https://rsshub.app/dcard/posts/popular?opencc=t2s>
 
 ## Output Formats
 
diff --git a/docs/parameter.md b/docs/parameter.md
index 0288126e17..6fb7dc407b 100644
--- a/docs/parameter.md
+++ b/docs/parameter.md
@@ -77,6 +77,12 @@ Telegram 即时预览模式需要在官网制作页面处理模板，请前往[
 
 举例: <https://rsshub.app/pnas/latest?scihub=1>
 
+## 中文简繁体转换
+
+-   opencc: s2t 简体转繁体、t2s 繁体转简体，其它可选值见 [OpenCC - Configurations](https://github.com/BYVoid/OpenCC#configurations-%E9%85%8D%E7%BD%AE%E6%96%87%E4%BB%B6)
+
+举例: <https://rsshub.app/dcard/posts/popular?opencc=t2s>
+
 ## 输出格式
 
 RSSHub 同时支持 RSS 2.0 和 Atom 输出格式，在路由末尾添加 `.rss` 或 `.atom` 即可请求对应输出格式，缺省为 RSS 2.0