diff --git a/frontend/src/components/document-preview.vue b/frontend/src/components/document-preview.vue
index a9bd5dda..b06a8a8a 100644
--- a/frontend/src/components/document-preview.vue
+++ b/frontend/src/components/document-preview.vue
@@ -197,7 +197,7 @@ async function renderMarkdown(blob: Blob) {
     gfm: true,
   });
   const renderer = new marked.Renderer();
-  renderer.code = function (text: string, lang?: string) {
+  renderer.code = function ({text, lang}) {
     let highlighted = '';
     if (lang && hljs.getLanguage(lang)) {
       try { highlighted = hljs.highlight(text, { language: lang }).value; }
diff --git a/frontend/src/utils/mermaidShared.ts b/frontend/src/utils/mermaidShared.ts
index 3b7b3d8b..04efaf43 100644
--- a/frontend/src/utils/mermaidShared.ts
+++ b/frontend/src/utils/mermaidShared.ts
@@ -1,4 +1,5 @@
 import mermaid from 'mermaid';
+import type {Tokens} from 'marked';
 
 let mermaidInitialized = false;
 
@@ -40,7 +41,7 @@ export const ensureMermaidInitialized = () => {
 export const createMermaidCodeRenderer = (idPrefix: string) => {
   let mermaidCount = 0;
 
-  return (text: string, lang?: string) => {
+  return ({text, lang}: Tokens.Code) => {
     if (lang === 'mermaid') {
       const id = `${idPrefix}-${++mermaidCount}`;
       return `<div class="mermaid" id="${id}">${text}</div>`;
diff --git a/frontend/src/views/chat/components/AgentStreamDisplay.vue b/frontend/src/views/chat/components/AgentStreamDisplay.vue
index caaa9e4b..106fc033 100644
--- a/frontend/src/views/chat/components/AgentStreamDisplay.vue
+++ b/frontend/src/views/chat/components/AgentStreamDisplay.vue
@@ -587,10 +587,7 @@ const props = defineProps<{
 }>();
 
 // Configure marked for security
-marked.use({
-  mangle: false,
-  headerIds: false
-});
+marked.use({});
 
 // Event stream
 const eventStream = computed(() => props.session?.agentEventStream || []);
diff --git a/frontend/src/views/chat/components/botmsg.vue b/frontend/src/views/chat/components/botmsg.vue
index cffaabb7..8f01f5d0 100644
--- a/frontend/src/views/chat/components/botmsg.vue
+++ b/frontend/src/views/chat/components/botmsg.vue
@@ -85,8 +85,6 @@ import {
 } from '@/utils/mermaidShared';
 
 marked.use({
-    mangle: false,
-    headerIds: false,
     breaks: true,  // 全局启用单个换行支持
 });
 
@@ -136,7 +134,7 @@ const closePreImg = () => {
 // 创建自定义渲染器实例
 const customRenderer = new marked.Renderer();
 // 覆盖图片渲染方法
-customRenderer.image = function(href, title, text) {
+customRenderer.image = function({href, title, text}){
     if (!isValidImageURL(href)) {
         return `<p>${t('error.invalidImageLink')}</p>`;
     }