diff --git a/src/App.tsx b/src/App.tsx
index 6f29766..807a18c 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,4 +1,4 @@
-import { Routes, Route } from 'react-router-dom'
+import { Routes, Route, Navigate } from 'react-router-dom'
 import { Layout } from './components/layout/Layout'
 import { HomePage } from './pages/HomePage'
 import { KnowledgeAreasPage } from './pages/KnowledgeAreasPage'
@@ -8,6 +8,7 @@ import { ProcessMatrixPage } from './pages/ProcessMatrixPage'
 import { ProcessGraphPage } from './pages/ProcessGraphPage'
 import { ArtifactDetailPage } from './pages/ArtifactDetailPage'
 import { ToolDetailPage } from './pages/ToolDetailPage'
+import { ChangelogPage } from './pages/ChangelogPage'
 import { SettingsPage } from './pages/SettingsPage'
 import ProcessPracticePage from './pages/ProcessPracticePage'
 
@@ -26,6 +27,8 @@ function App() {
         <Route path="/process-practice" element={<ProcessPracticePage />} />
         <Route path="/artifact/:id" element={<ArtifactDetailPage />} />
         <Route path="/tool/:id" element={<ToolDetailPage />} />
+        <Route path="/changelog" element={<ChangelogPage />} />
+        <Route path="/updates" element={<Navigate to="/changelog" replace />} />
         <Route path="/settings" element={<SettingsPage />} />
       </Routes>
     </Layout>
diff --git a/src/components/layout/Header.tsx b/src/components/layout/Header.tsx
index 72f5c39..33c0af9 100644
--- a/src/components/layout/Header.tsx
+++ b/src/components/layout/Header.tsx
@@ -1,7 +1,7 @@
 import { useAppStore } from '@/stores/useAppStore'
-import { Menu, Search, Sun, Moon, X } from 'lucide-react'
+import { Menu, Search, Sun, Moon, X, History } from 'lucide-react'
 import { useState, useMemo, useRef, useEffect } from 'react'
-import { useNavigate } from 'react-router-dom'
+import { useNavigate, useLocation } from 'react-router-dom'
 import { processes, artifacts, tools, knowledgeAreaMap } from '@/data'
 
 interface SearchResult {
@@ -24,6 +24,8 @@ export function Header() {
   const searchRef = useRef<HTMLDivElement>(null)
   const inputRef = useRef<HTMLInputElement>(null)
   const navigate = useNavigate()
+  const location = useLocation()
+  const isChangelogPage = location.pathname === '/changelog' || location.pathname === '/updates'
 
   // 搜索结果
   const searchResults = useMemo<SearchResult[]>(() => {
@@ -240,6 +242,20 @@ export function Header() {
 
       {/* 右侧：操作按钮 */}
       <div className="flex items-center gap-2">
+        {/* 更新日志 */}
+        <button
+          onClick={() => navigate('/changelog')}
+          className={`flex h-10 w-10 items-center justify-center rounded-lg transition-colors ${
+            isChangelogPage
+              ? 'bg-indigo-50 text-indigo-600 dark:bg-indigo-900/50 dark:text-indigo-400'
+              : 'hover:bg-gray-100 dark:hover:bg-gray-700 text-gray-500 dark:text-gray-400'
+          }`}
+          aria-label="查看更新日志"
+          title="更新日志"
+        >
+          <History size={20} />
+        </button>
+
         {/* 主题切换 */}
         <button
           onClick={toggleDarkMode}
diff --git a/src/data/changelog.json b/src/data/changelog.json
new file mode 100644
index 0000000..7209881
--- /dev/null
+++ b/src/data/changelog.json
@@ -0,0 +1,11 @@
+{
+  "changelogEntries": [
+    {
+      "id": "2026-03-08-changelog-page",
+      "date": "2026-03-08",
+      "type": "feat",
+      "title": "新增更新时间轴浏览页面与顶部快捷入口",
+      "scope": "整合"
+    }
+  ]
+}
diff --git a/src/data/index.ts b/src/data/index.ts
index 33f9a8b..77a2c17 100644
--- a/src/data/index.ts
+++ b/src/data/index.ts
@@ -8,6 +8,7 @@ import processGroupsData from './process-groups.json';
 import processesData from './processes.json';
 import artifactsData from './artifacts.json';
 import toolsData from './tools.json';
+import changelogData from './changelog.json';
 
 import type {
   KnowledgeArea,
@@ -15,6 +16,7 @@ import type {
   Process,
   Artifact,
   ToolTechnique,
+  ChangelogEntry,
   DataFlow,
   ProcessRef,
   ProcessEntityUse,
@@ -26,6 +28,9 @@ export const processGroups: ProcessGroup[] = processGroupsData.processGroups as
 export const processes: Process[] = processesData.processes as Process[];
 export const artifacts: Artifact[] = artifactsData.artifacts as Artifact[];
 export const tools: ToolTechnique[] = toolsData.tools as ToolTechnique[];
+export const changelogEntries: ChangelogEntry[] = [
+  ...(changelogData.changelogEntries as ChangelogEntry[]),
+].sort((a, b) => b.date.localeCompare(a.date));
 
 // 创建查找映射表
 export const knowledgeAreaMap = new Map<string, KnowledgeArea>(
diff --git a/src/pages/ChangelogPage.tsx b/src/pages/ChangelogPage.tsx
new file mode 100644
index 0000000..7e3fc16
--- /dev/null
+++ b/src/pages/ChangelogPage.tsx
@@ -0,0 +1,131 @@
+import { motion } from 'framer-motion'
+import { History, CalendarDays, Tag } from 'lucide-react'
+import { changelogEntries } from '@/data'
+import type { ChangelogType } from '@/types/itto'
+
+const containerVariants = {
+  hidden: { opacity: 0 },
+  visible: {
+    opacity: 1,
+    transition: {
+      staggerChildren: 0.06,
+    },
+  },
+}
+
+const itemVariants = {
+  hidden: { opacity: 0, y: 12 },
+  visible: {
+    opacity: 1,
+    y: 0,
+    transition: {
+      duration: 0.25,
+    },
+  },
+}
+
+const typeMeta: Record<ChangelogType, { label: string; className: string }> = {
+  feat: { label: '新功能', className: 'bg-emerald-100 text-emerald-700 dark:bg-emerald-900/30 dark:text-emerald-300' },
+  fix: { label: '修复', className: 'bg-rose-100 text-rose-700 dark:bg-rose-900/30 dark:text-rose-300' },
+  style: { label: '样式', className: 'bg-pink-100 text-pink-700 dark:bg-pink-900/30 dark:text-pink-300' },
+  refactor: { label: '重构', className: 'bg-violet-100 text-violet-700 dark:bg-violet-900/30 dark:text-violet-300' },
+  docs: { label: '文档', className: 'bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-300' },
+  perf: { label: '性能', className: 'bg-amber-100 text-amber-700 dark:bg-amber-900/30 dark:text-amber-300' },
+  test: { label: '测试', className: 'bg-cyan-100 text-cyan-700 dark:bg-cyan-900/30 dark:text-cyan-300' },
+  chore: { label: '工程', className: 'bg-gray-100 text-gray-700 dark:bg-gray-700 dark:text-gray-300' },
+}
+
+function formatDate(date: string) {
+  const [year, month, day] = date.split('-').map(Number)
+  if (!year || !month || !day) return date
+  return `${year}年${month}月${day}日`
+}
+
+export function ChangelogPage() {
+  return (
+    <div className="space-y-6">
+      {/* 页面标题 */}
+      <div>
+        <h1 className="text-2xl font-bold text-gray-900 dark:text-white">更新日志</h1>
+        <p className="text-gray-500 dark:text-gray-400 mt-1">
+          记录项目的演进历史和重要变更 · 共 {changelogEntries.length} 条记录
+        </p>
+      </div>
+
+      {/* 时间轴列表 */}
+      {changelogEntries.length > 0 ? (
+        <motion.div
+          variants={containerVariants}
+          initial="hidden"
+          animate="visible"
+          className="relative"
+        >
+          {/* 时间轴竖线 */}
+          <div className="absolute left-[15px] top-8 bottom-8 w-[2px] bg-gray-200 dark:bg-gray-700" />
+
+          {/* 更新记录列表 */}
+          <div className="space-y-6">
+            {changelogEntries.map((entry, index) => {
+              const meta = typeMeta[entry.type]
+              return (
+                <motion.div
+                  key={entry.id || `${entry.date}-${index}`}
+                  variants={itemVariants}
+                  className="relative flex gap-6"
+                >
+                  {/* 时间轴节点 */}
+                  <div className="relative flex-shrink-0">
+                    <div className="w-8 h-8 rounded-full bg-white dark:bg-gray-800 border-2 border-indigo-500 dark:border-indigo-400 flex items-center justify-center z-10">
+                      <div className="w-3 h-3 rounded-full bg-indigo-500 dark:bg-indigo-400" />
+                    </div>
+                  </div>
+
+                  {/* 更新卡片 */}
+                  <div className="flex-1 pb-2">
+                    <div className="bg-white dark:bg-gray-800 rounded-xl shadow-sm border border-gray-100 dark:border-gray-700 p-5 hover:shadow-md transition-shadow">
+                      {/* 标签行 */}
+                      <div className="flex flex-wrap items-center gap-2 mb-3">
+                        {/* 类型标签 */}
+                        <span className={`inline-flex items-center gap-1 px-2.5 py-1 rounded-md text-xs font-medium ${meta.className}`}>
+                          <Tag size={12} />
+                          {meta.label}
+                        </span>
+
+                        {/* 范围标签 */}
+                        {entry.scope && (
+                          <span className="inline-flex items-center px-2.5 py-1 rounded-md text-xs font-medium bg-gray-100 text-gray-700 dark:bg-gray-700 dark:text-gray-300">
+                            {entry.scope}
+                          </span>
+                        )}
+
+                        {/* 日期（桌面端靠右，移动端换行） */}
+                        <span className="inline-flex items-center gap-1.5 text-xs text-gray-500 dark:text-gray-400 sm:ml-auto">
+                          <CalendarDays size={12} />
+                          {formatDate(entry.date)}
+                        </span>
+                      </div>
+
+                      {/* 标题 */}
+                      <h3 className="text-base font-medium text-gray-900 dark:text-white">
+                        {entry.title}
+                      </h3>
+                    </div>
+                  </div>
+                </motion.div>
+              )
+            })}
+          </div>
+        </motion.div>
+      ) : (
+        <motion.div
+          initial={{ opacity: 0 }}
+          animate={{ opacity: 1 }}
+          className="flex flex-col items-center justify-center py-16 text-gray-400 dark:text-gray-500"
+        >
+          <History size={48} className="mb-4" />
+          <p className="text-sm">暂无更新记录</p>
+        </motion.div>
+      )}
+    </div>
+  )
+}
diff --git a/src/pages/index.ts b/src/pages/index.ts
index b46808f..bc703c8 100644
--- a/src/pages/index.ts
+++ b/src/pages/index.ts
@@ -7,4 +7,5 @@ export { ProcessRoadmapPage } from './ProcessRoadmapPage'
 export { ProcessGraphPage } from './ProcessGraphPage'
 export { ArtifactDetailPage } from './ArtifactDetailPage'
 export { ToolDetailPage } from './ToolDetailPage'
+export { ChangelogPage } from './ChangelogPage'
 export { SettingsPage } from './SettingsPage'
diff --git a/src/types/itto.ts b/src/types/itto.ts
index e86c532..e4d8571 100644
--- a/src/types/itto.ts
+++ b/src/types/itto.ts
@@ -152,6 +152,26 @@ export interface LearningStats {
   lastStudyDate: Date;
 }
 
+// 更新类型
+export type ChangelogType =
+  | 'feat'
+  | 'fix'
+  | 'style'
+  | 'refactor'
+  | 'docs'
+  | 'perf'
+  | 'test'
+  | 'chore';
+
+// 更新记录
+export interface ChangelogEntry {
+  id?: string;           // 可选：推荐提供，便于稳定渲染和后续扩展
+  date: string;          // 日期，格式如 "2026-03-08"
+  type: ChangelogType;   // 更新类型
+  title: string;         // 更新标题
+  scope?: string;        // 关联范围，如"整合""风险""矩阵"
+}
+
 // 数据流向关系
 export interface DataFlow {
   sourceProcessId: string;     // 源过程ID