diff --git a/help/FEATURES.md b/help/FEATURES.md
index 86e8ef3d..bde1aa79 100644
--- a/help/FEATURES.md
+++ b/help/FEATURES.md
@@ -1,5 +1,6 @@
 ---
 headingNumber: true
+enableMacro: true
 customVar: Hello
 ---
 
@@ -428,12 +429,15 @@ xml 代码块 第一行注释需要有 `--drawio--` 文字
 变量名 | 类型 | 描述
 ---- | ----- | ---
 headingNumber | boolean | 是否开启页面标题序号编号
+enableMacro | boolean | 是否开启宏替换
 
 ## 宏替换
 
 Yank Note 运行你在页面中嵌入宏，用以动态的替换文档。
 
-### 语法
+### 使用
+
+使用前需要先在 Front Matter 开启宏替换，定义 `enableMacro: true`
 
 ```md
 <= <expression> =>
diff --git a/src/renderer/plugins/markdown-macro.ts b/src/renderer/plugins/markdown-macro.ts
index 0a0e038b..8d02212e 100644
--- a/src/renderer/plugins/markdown-macro.ts
+++ b/src/renderer/plugins/markdown-macro.ts
@@ -20,35 +20,29 @@ export default {
     ctx.markdown.registerPlugin(md => {
       const render = md.render
       md.render = (src: string, env?: any) => {
-        let vars: Record<string, any> | undefined
-        function getVars () {
-          if (!vars) {
-            const file = env.file || {}
-            vars = {
-              $ctx: ctx,
-              $doc: {
-                basename: file.name ? file.name.substring(0, file.name.lastIndexOf('.')) : '',
-                ...ctx.lib.lodash.pick(env.file, 'name', 'repo', 'path', 'content', 'status')
-              },
-              ...env.attributes
-            }
-          }
-
-          return vars || {}
+        if (!env.attributes || !env.attributes.enableMacro) {
+          return render.call(md, src, env)
         }
 
-        const keys = Object.keys(env.attributes)
-        if (keys.length > 0) {
-          const reg = /<=((?:.|\s)+?)=>/g
-          src = src.replace(reg, (match, $1) => {
-            try {
-              return macro($1.trim(), getVars())
-            } catch {}
-
-            return match
-          })
+        const file = env.file || {}
+        const vars = {
+          $ctx: ctx,
+          $doc: {
+            basename: file.name ? file.name.substring(0, file.name.lastIndexOf('.')) : '',
+            ...ctx.lib.lodash.pick(env.file, 'name', 'repo', 'path', 'content', 'status')
+          },
+          ...env.attributes
         }
 
+        const reg = /<=((?:.|\s)+?)=>/g
+        src = src.replace(reg, (match, $1) => {
+          try {
+            return macro($1.trim(), vars)
+          } catch {}
+
+          return match
+        })
+
         return render.call(md, src, env)
       }
     })
diff --git a/src/renderer/types.ts b/src/renderer/types.ts
index 0acb6f06..51c6af89 100644
--- a/src/renderer/types.ts
+++ b/src/renderer/types.ts
@@ -161,5 +161,6 @@ export type BuildInActions = {
 export type BuildInActionName = keyof BuildInActions
 
 export type FrontMatterAttrs = {
-  'headingNumber'?: boolean
+  headingNumber?: boolean,
+  enableMacro?: boolean,
 }