diff --git a/src/components/dialog/AboutDialog.vue b/src/components/dialog/AboutDialog.vue
index 0d613a5d..62226c5a 100644
--- a/src/components/dialog/AboutDialog.vue
+++ b/src/components/dialog/AboutDialog.vue
@@ -1,6 +1,7 @@
 <script lang="ts" setup>
 import { formatDateDifference } from '@/@core/utils/formatters'
 import api from '@/api'
+import type { Process as SystemProcess } from '@/api/types'
 import { clearCacheAndReload } from '@/composables/useVersionChecker'
 import MarkdownIt from 'markdown-it'
 import mdLinkAttributes from 'markdown-it-link-attributes'
@@ -37,6 +38,12 @@ md.use(mdLinkAttributes, {
 // 系统环境变量
 const systemEnv = ref<any>({})
 
+// 系统运行时间的基准秒数和同步时间，用于在弹窗打开后实时递增展示。
+const systemUptimeBaseSeconds = ref<number | null>(null)
+const systemUptimeSyncedAt = ref(0)
+const systemUptimeNow = ref(Date.now())
+let systemUptimeTimer: ReturnType<typeof setInterval> | null = null
+
 // 所有Release
 const allRelease = ref<any>([])
 
@@ -102,6 +109,22 @@ const frontendVersionStatistics = computed(() => versionStatistic.value?.fronten
 // 活跃用户统计
 const activeUsers = computed(() => versionStatistic.value?.active_users ?? {})
 
+// 系统运行秒数
+const systemUptimeSeconds = computed(() => {
+  if (systemUptimeBaseSeconds.value === null) return null
+
+  const elapsedSeconds = Math.floor((systemUptimeNow.value - systemUptimeSyncedAt.value) / 1000)
+
+  return Math.max(0, systemUptimeBaseSeconds.value + elapsedSeconds)
+})
+
+// 友好的系统运行时间文本
+const systemUptimeText = computed(() => {
+  if (systemUptimeSeconds.value === null) return ''
+
+  return formatUptimeDuration(systemUptimeSeconds.value)
+})
+
 /** 格式化版本安装统计数字为千分位展示。 */
 function formatVersionStatisticNumber(value: unknown) {
   const numberValue = Number(value ?? 0)
@@ -111,6 +134,85 @@ function formatVersionStatisticNumber(value: unknown) {
   return numberValue.toLocaleString()
 }
 
+/** 将秒数保存为运行时间基准，并记录本地同步时间。 */
+function syncSystemUptime(seconds: number | null) {
+  if (seconds === null) return
+
+  const now = Date.now()
+
+  systemUptimeBaseSeconds.value = seconds
+  systemUptimeSyncedAt.value = now
+  systemUptimeNow.value = now
+}
+
+/** 将接口返回值规范化为可展示的秒数。 */
+function normalizeUptimeSeconds(value: unknown) {
+  const numberValue = Number(value)
+
+  if (!Number.isFinite(numberValue) || numberValue < 0) return null
+
+  return Math.floor(numberValue)
+}
+
+/** 从进程创建时间推导运行秒数；兼容秒级和毫秒级时间戳。 */
+function uptimeSecondsFromCreateTime(value: unknown) {
+  const timestamp = Number(value)
+
+  if (!Number.isFinite(timestamp) || timestamp <= 0) return null
+
+  const timestampMs = timestamp > 1_000_000_000_000 ? timestamp : timestamp * 1000
+
+  return Math.max(0, Math.floor((Date.now() - timestampMs) / 1000))
+}
+
+/** 获取单个进程的运行秒数，优先使用创建时间以保留跨天运行时长。 */
+function getProcessUptimeSeconds(process: SystemProcess) {
+  return uptimeSecondsFromCreateTime(process.create_time) ?? normalizeUptimeSeconds(process.run_time)
+}
+
+/** 从进程列表中挑选 MoviePilot 主进程，找不到时使用运行时间最长的进程兜底。 */
+function resolveSystemUptimeSeconds(processes: SystemProcess[]) {
+  const availableProcesses = processes
+    .map(process => ({
+      process,
+      uptimeSeconds: getProcessUptimeSeconds(process),
+    }))
+    .filter((item): item is { process: SystemProcess; uptimeSeconds: number } => item.uptimeSeconds !== null)
+
+  if (!availableProcesses.length) return null
+
+  const preferredProcesses = availableProcesses.filter(({ process }) =>
+    /moviepilot|python|uvicorn|gunicorn|hypercorn/i.test(process.name ?? ''),
+  )
+  const targetProcesses = preferredProcesses.length ? preferredProcesses : availableProcesses
+
+  return targetProcesses.reduce((max, item) => (item.uptimeSeconds > max.uptimeSeconds ? item : max)).uptimeSeconds
+}
+
+/** 格式化单个运行时间单位。 */
+function formatUptimeUnit(value: number, unit: 'day' | 'hour' | 'minute' | 'second') {
+  const unitKey = value === 1 ? unit : `${unit}s`
+
+  return t(`setting.about.uptimeUnits.${unitKey}`, { count: value })
+}
+
+/** 将运行秒数格式化为两段以内的友好文本，例如“3天 2小时”。 */
+function formatUptimeDuration(totalSeconds: number) {
+  const normalizedSeconds = Math.max(0, Math.floor(totalSeconds))
+  const days = Math.floor(normalizedSeconds / 86400)
+  const hours = Math.floor((normalizedSeconds % 86400) / 3600)
+  const minutes = Math.floor((normalizedSeconds % 3600) / 60)
+  const seconds = normalizedSeconds % 60
+  const parts: string[] = []
+
+  if (days > 0) parts.push(formatUptimeUnit(days, 'day'))
+  if (hours > 0) parts.push(formatUptimeUnit(hours, 'hour'))
+  if (minutes > 0 && parts.length < 2) parts.push(formatUptimeUnit(minutes, 'minute'))
+  if (!parts.length) parts.push(formatUptimeUnit(seconds, 'second'))
+
+  return parts.slice(0, 2).join(' ')
+}
+
 // 打开日志对话框
 function showReleaseDialog(title: string, body: string) {
   releaseDialogTitle.value = title
@@ -151,6 +253,17 @@ async function querySystemEnv() {
   }
 }
 
+// 查询系统运行时间
+async function querySystemUptime() {
+  try {
+    const processes: SystemProcess[] = await api.get('dashboard/processes')
+
+    syncSystemUptime(resolveSystemUptimeSeconds(processes))
+  } catch (error) {
+    console.log(error)
+  }
+}
+
 // 查询所有Release
 async function queryAllRelease() {
   try {
@@ -192,8 +305,17 @@ async function clearCache() {
 
 onMounted(() => {
   querySystemEnv()
+  querySystemUptime()
   queryAllRelease()
   querySupportingSites()
+
+  systemUptimeTimer = setInterval(() => {
+    if (systemUptimeBaseSeconds.value !== null) systemUptimeNow.value = Date.now()
+  }, 1000)
+})
+
+onBeforeUnmount(() => {
+  if (systemUptimeTimer) clearInterval(systemUptimeTimer)
 })
 </script>
 
@@ -321,6 +443,16 @@ onMounted(() => {
                     </dd>
                   </div>
                 </div>
+                <div v-if="systemUptimeText">
+                  <div class="max-w-6xl py-4 sm:grid sm:grid-cols-3 sm:gap-4">
+                    <dt class="block text-sm font-bold">{{ t('setting.about.systemUptime') }}</dt>
+                    <dd class="flex text-sm sm:col-span-2 sm:mt-0">
+                      <span class="flex-grow flex flex-row items-center truncate">
+                        <code class="truncate">{{ systemUptimeText }}</code>
+                      </span>
+                    </dd>
+                  </div>
+                </div>
                 <div>
                   <div class="max-w-6xl py-4 sm:grid sm:grid-cols-3 sm:gap-4">
                     <dt class="block text-sm font-bold">{{ t('setting.about.supportingSites') }}</dt>
diff --git a/src/locales/en-US.ts b/src/locales/en-US.ts
index 312f36ec..6a42bd60 100644
--- a/src/locales/en-US.ts
+++ b/src/locales/en-US.ts
@@ -1406,6 +1406,7 @@ export default {
       title: 'About MoviePilot',
       softwareVersion: 'Software Version',
       frontendVersion: 'Frontend Version',
+      systemUptime: 'System Uptime',
       browserVersion: 'Browser Cached Version',
       authVersion: 'Auth Resource Version',
       indexerVersion: 'Indexer Resource Version',
@@ -1439,6 +1440,16 @@ export default {
       users: 'Users',
       lastUpdated: 'Updated At',
       noVersionStatisticData: 'No statistics data',
+      uptimeUnits: {
+        day: '{count} day',
+        days: '{count} days',
+        hour: '{count} hour',
+        hours: '{count} hours',
+        minute: '{count} minute',
+        minutes: '{count} minutes',
+        second: '{count} second',
+        seconds: '{count} seconds',
+      },
     },
     system: {
       custom: 'Custom',
diff --git a/src/locales/zh-CN.ts b/src/locales/zh-CN.ts
index 3d74d6df..7dfc2ce9 100644
--- a/src/locales/zh-CN.ts
+++ b/src/locales/zh-CN.ts
@@ -1401,6 +1401,7 @@ export default {
       title: '关于 MoviePilot',
       softwareVersion: '软件版本',
       frontendVersion: '前端版本',
+      systemUptime: '系统已运行',
       browserVersion: '浏览器缓存版本',
       authVersion: '认证资源版本',
       indexerVersion: '站点资源版本',
@@ -1434,6 +1435,16 @@ export default {
       users: '用户数',
       lastUpdated: '更新时间',
       noVersionStatisticData: '暂无统计数据',
+      uptimeUnits: {
+        day: '{count}天',
+        days: '{count}天',
+        hour: '{count}小时',
+        hours: '{count}小时',
+        minute: '{count}分钟',
+        minutes: '{count}分钟',
+        second: '{count}秒',
+        seconds: '{count}秒',
+      },
     },
     system: {
       custom: '自定义',
diff --git a/src/locales/zh-TW.ts b/src/locales/zh-TW.ts
index 1a8257e3..098a346f 100644
--- a/src/locales/zh-TW.ts
+++ b/src/locales/zh-TW.ts
@@ -1402,6 +1402,7 @@ export default {
       title: '關於 MoviePilot',
       softwareVersion: '軟件版本',
       frontendVersion: '前端版本',
+      systemUptime: '系統已運行',
       browserVersion: '瀏覽器緩存版本',
       authVersion: '認證資源版本',
       indexerVersion: '站點資源版本',
@@ -1435,6 +1436,16 @@ export default {
       users: '用戶數',
       lastUpdated: '更新時間',
       noVersionStatisticData: '暫無統計數據',
+      uptimeUnits: {
+        day: '{count}天',
+        days: '{count}天',
+        hour: '{count}小時',
+        hours: '{count}小時',
+        minute: '{count}分鐘',
+        minutes: '{count}分鐘',
+        second: '{count}秒',
+        seconds: '{count}秒',
+      },
     },
     system: {
       custom: '自定義',