diff --git a/blog.config.js b/blog.config.js
index 6b517655..fa9a5845 100644
--- a/blog.config.js
+++ b/blog.config.js
@@ -95,7 +95,7 @@ const BLOG = {
   PRISM_JS_PATH: 'https://npm.elemecdn.com/prismjs@1.29.0/components/',
   // 代码主题 https://github.com/PrismJS/prism-themes
   PRISM_THEME_PREFIX_PATH: 'https://cdn.jsdelivr.net/npm/prismjs@1.29.0/themes/prism-okaidia.css', // 代码块默认主题
-  PRISM_THEME_SWITCH: true, // 是否开启浅色/深色模式代码主题切换
+  PRISM_THEME_SWITCH: process.env.NEXT_PUBLIC_PRISM_THEME_SWITCH || true, // 是否开启浅色/深色模式代码主题切换
   PRISM_THEME_LIGHT_PATH: 'https://cdn.jsdelivr.net/npm/prismjs@1.29.0/themes/prism-solarizedlight.css', // 浅色模式主题
   PRISM_THEME_DARK_PATH: 'https://cdn.jsdelivr.net/npm/prismjs@1.29.0/themes/prism-okaidia.min.css', // 深色模式主题
 
diff --git a/components/PrismMac.js b/components/PrismMac.js
index 9eab8fe7..bc3b7a7e 100644
--- a/components/PrismMac.js
+++ b/components/PrismMac.js
@@ -60,7 +60,7 @@ const loadPrismThemeCSS = () => {
   let PRISM_THEME
   let PRISM_PREVIOUS
   const themeClass = document.documentElement.className
-  if (BLOG.PRISM_THEME_SWITCH) {
+  if (JSON.parse(BLOG.PRISM_THEME_SWITCH)) {
     if (themeClass === 'dark') {
       PRISM_THEME = BLOG.PRISM_THEME_DARK_PATH
       PRISM_PREVIOUS = BLOG.PRISM_THEME_LIGHT_PATH