diff --git a/README.md b/README.md
index d1628b76..f0f96d73 100644
--- a/README.md
+++ b/README.md
@@ -48,10 +48,10 @@
 ## 支持主题切换
 | 主题截图 | 预览地址 |
 |--|--|
-| <img src='./docs/theme-next.png' width='300'/> | [预览地址](https://preview.tangly1024.com/?theme=next) |
-| <img src='./docs/theme-medium.png' width='300'/>| [预览地址](https://preview.tangly1024.com/?theme=medium) |
-| <img src='./docs/theme-hexo.png' width='300'/> |  [预览地址](https://preview.tangly1024.com/?theme=hexo)  |
-| <img src='./docs/theme-fukasawa.png' width='300'/>|  [预览地址](https://preview.tangly1024.com/?theme=fukasawa) |
+| <img src='./docs/theme-next.png' width='300'/> | [预览NEXT](https://preview.tangly1024.com/?theme=next) |
+| <img src='./docs/theme-medium.png' width='300'/>| [预览MEDIUM](https://preview.tangly1024.com/?theme=medium) |
+| <img src='./docs/theme-hexo.png' width='300'/> |  [预览HEXO](https://preview.tangly1024.com/?theme=hexo)  |
+| <img src='./docs/theme-fukasawa.png' width='300'/>|  [预览FUKASAWA](https://preview.tangly1024.com/?theme=fukasawa) |
 
 *只需修改`blog.config.js`文件的`THEME`即可实现主题切换。*
 
diff --git a/blog.config.js b/blog.config.js
index 90726a7e..76ab5d35 100644
--- a/blog.config.js
+++ b/blog.config.js
@@ -10,7 +10,7 @@ const BLOG = {
   NOTION_ACCESS_TOKEN: process.env.NOTION_ACCESS_TOKEN || '', // Useful if you prefer not to make your database public
   DEBUG: process.env.NEXT_PUBLIC_DEBUG || false, // 是否显示调试按钮
 
-  THEME: process.env.NEXT_PUBLIC_THEME || 'next', // 主题， 支持 ['Next','Hexo',"Fukasawa','Medium']
+  THEME: process.env.NEXT_PUBLIC_THEME || 'next', // 主题， 支持 ['next','hexo',"fukasawa','medium']
   LANG: 'zh-CN', // e.g 'zh-CN','en-US'  see /lib/lang.js for more.
   SINCE: 2021, // e.g if leave this empty, current year will be used.
   BEI_AN: process.env.NEXT_PUBLIC_BEI_AN || '', // 备案号 闽ICP备XXXXXXX