diff --git a/.circleci/config.yml b/.circleci/config.yml
index b13f3452..4752606c 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -8,7 +8,7 @@ jobs:
       - checkout
       - run: git submodule sync
       - run: git submodule update --init
-      - run: HUGO_ENV=production hugo --source=exampleSite -v --gc
+      - run: hugo --source=exampleSite -v --gc
       - run: htmlproofer exampleSite/public --check-html --allow-hash-href --empty-alt-ignore --disable-external
 
 workflows:
diff --git a/README.md b/README.md
index 25210d26..5cabbda7 100644
--- a/README.md
+++ b/README.md
@@ -158,14 +158,6 @@ Customize `browserconfig.xml` and `site.webmanifest` to set theme-color and back
 
 ## Tips
 
-### Set `production` environment when generating site
-
-Because some features are only in production mode, so you need to add a `production` environment variables when generating your site.
-
-```bash
-  HUGO_ENV=production hugo --gc --minify
-```
-
 ### How to toggle dark-light mode
 
 * You can click the circle icon to toggle dark-light mode. In the desktop version the circle icon is to the right and in the mobile version is positioned to the left, close to the site title.
diff --git a/README.zh.md b/README.zh.md
index e7d91268..2e6374a5 100644
--- a/README.zh.md
+++ b/README.zh.md
@@ -153,14 +153,6 @@
 
 ## 小技巧
 
-### 在生成网站时设置 `production` 环境变量
-
-由于主题的一些功能仅在生产环境有效，所以你需要在生成网站时设置 `production` 环境变量。
-
-```bash
-  HUGO_ENV=production hugo --gc --minify
-```
-
 ### 怎样切换网站 暗黑-明亮 模式
 
 * 你可以点击圆形图标来切换网站 暗黑-明亮 模式。桌面模式下圆形图标在网页右上角，移动设备模式下在网站左上角标题旁边
diff --git a/layouts/_default/baseof.html b/layouts/_default/baseof.html
index dd6a7925..90f5b6fb 100644
--- a/layouts/_default/baseof.html
+++ b/layouts/_default/baseof.html
@@ -5,7 +5,7 @@
 
 {{- $scratch := newScratch -}}
 {{- .Scratch.Set "scratch" $scratch -}}
-{{- if eq (getenv "HUGO_ENV") "production" -}}
+{{- if eq hugo.Environment "production" -}}
     {{- $scratch.Set "production" true -}}
     {{- $scratch.Set "CDN" .Site.Params.cdn -}}
 {{- end -}}
diff --git a/package.json b/package.json
index 099ced9f..565f3246 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   "scripts": {
     "build": "npx babel src --out-file assets/js/theme.min.js --source-maps",
     "start": "hugo server --source=exampleSite --themesDir=../.. --disableFastRender -D",
-    "copy": "HUGO_ENV=production hugo -v --source=exampleSite --themesDir=../.. -D --gc --minify && rm -rf resources && cp -rf exampleSite/resources resources"
+    "copy": "hugo -v --source=exampleSite --themesDir=../.. -D --gc --minify && rm -rf resources && cp -rf exampleSite/resources resources"
   },
   "husky": {
     "hooks": {