diff --git a/plugins/plugin-md-power/src/node/demo/watcher.ts b/plugins/plugin-md-power/src/node/demo/watcher.ts
index fb66e943..dad01f3f 100644
--- a/plugins/plugin-md-power/src/node/demo/watcher.ts
+++ b/plugins/plugin-md-power/src/node/demo/watcher.ts
@@ -2,6 +2,7 @@ import type { FSWatcher } from 'chokidar'
 import type { App } from 'vuepress'
 import fs from 'node:fs'
 import path from 'node:path'
+import { deleteKey } from '@pengzhanbo/utils'
 import { watch } from 'chokidar'
 import { compileCode, parseEmbedCode } from './normal.js'
 import { readFileSync } from './supports/file.js'
@@ -77,7 +78,7 @@ export function demoWatcher(app: App, watchers: any[]): void {
   })
 
   watcher.on('unlink', (path) => {
-    delete tasks[path]
+    deleteKey(tasks, path)
     watcher!.unwatch(path)
   })
 
diff --git a/plugins/plugin-md-power/src/node/embed/createEmbedRuleBlock.ts b/plugins/plugin-md-power/src/node/embed/createEmbedRuleBlock.ts
index b9b5b61f..829c5fa2 100644
--- a/plugins/plugin-md-power/src/node/embed/createEmbedRuleBlock.ts
+++ b/plugins/plugin-md-power/src/node/embed/createEmbedRuleBlock.ts
@@ -66,11 +66,12 @@ export interface EmbedRuleBlockOptions<Meta extends Record<string, any>> {
  *
  * 创建嵌入规则块
  *
- * Syntax: @[name]()
- * 语法：@[name]()
+ * Syntax: \@\[name]()
+ *
+ * 语法：\@\[name]()
  *
  * @param md - Markdown instance / Markdown 实例
- * @param options - Embed rule block options / 嵌入规则块选项
+ * @param {EmbedRuleBlockOptions} options - Embed rule block options / 嵌入规则块选项
  * @typeParam Meta - Metadata type / 元数据类型
  */
 export function createEmbedRuleBlock<Meta extends Record<string, any> = Record<string, any>>(
diff --git a/plugins/plugin-md-power/src/node/enhance/docsTitle.ts b/plugins/plugin-md-power/src/node/enhance/docsTitle.ts
index da783008..c77111a2 100644
--- a/plugins/plugin-md-power/src/node/enhance/docsTitle.ts
+++ b/plugins/plugin-md-power/src/node/enhance/docsTitle.ts
@@ -21,7 +21,7 @@ const REG_HEADING = /^#\s*?([^#\s].*)?\n/
  * @param md - Markdown instance / Markdown 实例
  */
 export function docsTitlePlugin(md: Markdown): void {
-  const render = md.render
+  const render = md.render.bind(md)
   md.render = (source, env: MarkdownEnv) => {
     if (!env.filePathRelative)
       return render(source, env)
diff --git a/theme/src/node/collections/compat.ts b/theme/src/node/collections/compat.ts
index 7c16a65a..61564c0a 100644
--- a/theme/src/node/collections/compat.ts
+++ b/theme/src/node/collections/compat.ts
@@ -1,5 +1,5 @@
 import type { ThemeDocCollection, ThemeOptions } from '../../shared/index.js'
-import { toArray } from '@pengzhanbo/utils'
+import { deleteKey, toArray } from '@pengzhanbo/utils'
 import { removeLeadingSlash } from 'vuepress/shared'
 import { path } from 'vuepress/utils'
 
@@ -64,10 +64,8 @@ export function compatBlogAndNotesToCollections(options: ThemeOptions): void {
         }) as ThemeDocCollection))
       }
     }
-
-    delete opt.notes
+    deleteKey(opt, 'notes')
   }
 
-  delete options.blog
-  delete options.notes
+  deleteKey(options, ['blog', 'notes'])
 }
diff --git a/theme/src/node/pages/encryptPage.ts b/theme/src/node/pages/encryptPage.ts
index 77fc3877..3732673f 100644
--- a/theme/src/node/pages/encryptPage.ts
+++ b/theme/src/node/pages/encryptPage.ts
@@ -1,6 +1,6 @@
 import type { Page } from 'vuepress/core'
 import type { ThemePageData } from '../../shared/index.js'
-import { toArray } from '@pengzhanbo/utils'
+import { deleteKey, toArray } from '@pengzhanbo/utils'
 import pMap from 'p-map'
 import { genEncrypt } from '../utils/index.js'
 
@@ -16,5 +16,5 @@ export async function encryptPage(
   if (password.length) {
     page.data._e = (await pMap(password, item => genEncrypt(item))).join(':')
   }
-  delete page.frontmatter.password
+  deleteKey(page.frontmatter, 'password')
 }
diff --git a/theme/src/node/pages/extendsPage.ts b/theme/src/node/pages/extendsPage.ts
index 249696c5..c2a0a57d 100644
--- a/theme/src/node/pages/extendsPage.ts
+++ b/theme/src/node/pages/extendsPage.ts
@@ -1,5 +1,6 @@
 import type { Page } from 'vuepress/core'
 import type { ThemePageData } from '../../shared/index.js'
+import { deleteKey } from '@pengzhanbo/utils'
 import { findCollection } from '../collections/findCollection.js'
 import { autoCategory } from './autoCategory.js'
 import { encryptPage } from './encryptPage.js'
@@ -33,7 +34,7 @@ function cleanPageData(page: Page<ThemePageData>) {
 
   if (page.frontmatter.home) {
     page.frontmatter.pageLayout = 'home'
-    delete page.frontmatter.home
+    deleteKey(page.frontmatter, 'home')
   }
 
   if (page.headers) {
@@ -45,14 +46,14 @@ function cleanPageData(page: Page<ThemePageData>) {
     page.data.type = 'friends'
     page.permalink = page.permalink ?? '/friends/'
     page.frontmatter.pageLayout = 'friends'
-    delete page.frontmatter.friends
+    deleteKey(page.frontmatter, 'friends')
   }
 
   const pageType = page.frontmatter._pageLayout as string
   if (pageType) {
     page.frontmatter.draft = true
     page.data.type = pageType as any
-    delete page.frontmatter._pageLayout
+    deleteKey(page.frontmatter, '_pageLayout')
   }
 
   if (page.frontmatter.pageLayout === 'blog' || page.frontmatter.pageLayout === 'posts') {
@@ -62,7 +63,7 @@ function cleanPageData(page: Page<ThemePageData>) {
 
   if ('externalLink' in page.frontmatter) {
     page.frontmatter.externalLinkIcon = page.frontmatter.externalLink
-    delete page.frontmatter.externalLink
+    deleteKey(page.frontmatter, 'externalLink')
   }
 
   // is markdown file
diff --git a/theme/src/node/prepare/prepareSidebar.ts b/theme/src/node/prepare/prepareSidebar.ts
index 4cd43698..fb844998 100644
--- a/theme/src/node/prepare/prepareSidebar.ts
+++ b/theme/src/node/prepare/prepareSidebar.ts
@@ -7,6 +7,7 @@ import type {
   ThemeSidebar,
   ThemeSidebarItem,
 } from '../../shared/index.js'
+import { deleteKey } from '@pengzhanbo/utils'
 import {
   ensureLeadingSlash,
   entries,
@@ -191,15 +192,14 @@ function cleanSidebar(sidebar: (ThemeSidebarItem)[]) {
     if (isPlainObject(item)) {
       if (isArray(item.items)) {
         if (item.items.length === 0) {
-          delete item.items
-          delete item.collapsed
+          deleteKey(item, ['items', 'collapsed'])
         }
         else {
           cleanSidebar(item.items as ThemeSidebarItem[])
         }
       }
       else if (!('items' in item)) {
-        delete item.collapsed
+        deleteKey(item, 'collapsed')
       }
     }
   }