diff --git a/src/biz/Body.tsx b/src/biz/Body.tsx
index 6743ed8..d68470d 100644
--- a/src/biz/Body.tsx
+++ b/src/biz/Body.tsx
@@ -43,6 +43,7 @@ import {getSummarize} from '../util/biz_util'
 import {openUrl} from '@kky002/kky-util'
 import Markdown from '../components/Markdown'
 import {random} from 'lodash-es'
+import useKeyService from '../hooks/useKeyService'
 
 const Body = () => {
   const dispatch = useAppDispatch()
@@ -207,6 +208,9 @@ const Body = () => {
     dispatch(setAskFold(!askFold))
   }, [askFold, dispatch])
 
+  // service
+  useKeyService()
+
   // 自动滚动
   useEffect(() => {
     if (checkAutoScroll && curOffsetTop && autoScroll && !needScroll) {
@@ -304,6 +308,13 @@ const Body = () => {
                                                            segmentIdx={segmentIdx} bodyRef={bodyRef}/>)}
 
       {/* tip */}
+      <div className='text-sm font-semibold text-center'>快捷键提示</div>
+      <ul className='list-disc text-sm desc pl-5'>
+        <li>单击字幕跳转，双击字幕跳转+切换暂停。</li>
+        <li>alt+单击字幕复制单条字幕。</li>
+        <li>上下方向键来移动当前字幕(可先点击字幕使焦点在字幕列表内)。</li>
+      </ul>
+
       {/* <div className='flex flex-col items-center text-center pt-1 pb-2'> */}
       {/*  <div className='font-semibold text-accent'>💡<span className='underline underline-offset-4'>提示</span>💡</div> */}
       {/*  <div className='text-sm desc px-2'>可以尝试将<span className='text-amber-600 font-semibold'>概览</span>生成的内容粘贴到<span */}
@@ -314,7 +325,7 @@ const Body = () => {
       {/*  </button>} */}
       {/* </div> */}
       <div className='flex flex-col'>
-        <div className='flex flex-col items-center text-center py-2 mx-4'>
+        <div className='flex flex-col items-center text-center py-2 mx-4 border-t border-t-base-300'>
           <div className='font-semibold text-accent flex items-center gap-1'><img src='/bibigpt.png'
                                                                                   alt='BibiGPT logo'
                                                                                   className='w-8 h-8'/>BibiGPT
diff --git a/src/biz/CompactSegmentItem.tsx b/src/biz/CompactSegmentItem.tsx
index e091e3e..6457e49 100644
--- a/src/biz/CompactSegmentItem.tsx
+++ b/src/biz/CompactSegmentItem.tsx
@@ -9,8 +9,9 @@ const CompactSegmentItem = (props: {
   isIn: boolean
   last: boolean
   moveCallback: (event: any) => void
+  move2Callback: (event: any) => void
 }) => {
-  const {item, idx, last, isIn, moveCallback} = props
+  const {item, idx, last, isIn, moveCallback, move2Callback} = props
   const transResult = useAppSelector(state => state.env.transResults[idx])
   const envData = useAppSelector(state => state.env.envData)
   const fontSize = useAppSelector(state => state.env.envData.fontSize)
@@ -19,7 +20,7 @@ const CompactSegmentItem = (props: {
   const display = useMemo(() => getDisplay(envData.transDisplay, item.content, transText), [envData.transDisplay, item.content, transText])
 
   return <div className={classNames('inline', fontSize === 'large'?'text-sm':'text-xs')}>
-    <span className={'pl-1 pr-0.5 py-0.5 cursor-pointer rounded-sm hover:bg-base-200'} onClick={moveCallback}>
+    <span className={'pl-1 pr-0.5 py-0.5 cursor-pointer rounded-sm hover:bg-base-200'} onClick={moveCallback} onDoubleClick={move2Callback}>
       <text className={classNames('font-medium', isIn ? 'text-primary underline' : '')}>{display.main}</text>
       {display.sub && <text className='desc'>({display.sub})</text>}</span>
     <span className='text-base-content/75'>{!last && ','}</span>
diff --git a/src/biz/NormalSegmentItem.tsx b/src/biz/NormalSegmentItem.tsx
index d984154..4f3b72d 100644
--- a/src/biz/NormalSegmentItem.tsx
+++ b/src/biz/NormalSegmentItem.tsx
@@ -9,8 +9,9 @@ const NormalSegmentItem = (props: {
   idx: number
   isIn: boolean
   moveCallback: (event: any) => void
+  move2Callback: (event: any) => void
 }) => {
-  const {item, idx, isIn, moveCallback} = props
+  const {item, idx, isIn, moveCallback, move2Callback} = props
   const transResult = useAppSelector(state => state.env.transResults[idx])
   const envData = useAppSelector(state => state.env.envData)
   const fontSize = useAppSelector(state => state.env.envData.fontSize)
@@ -19,7 +20,7 @@ const NormalSegmentItem = (props: {
   const display = useMemo(() => getDisplay(envData.transDisplay, item.content, transText), [envData.transDisplay, item.content, transText])
 
   return <div className={classNames('flex py-0.5 cursor-pointer rounded-sm hover:bg-base-200', fontSize === 'large'?'text-sm':'text-xs')}
-              onClick={moveCallback}>
+              onClick={moveCallback} onDoubleClick={move2Callback}>
     <div className='desc w-[66px] flex justify-center'>{formatTime(item.from)}</div>
     <div className={'flex-1'}>
       <div className={classNames('font-medium', isIn ? 'text-primary underline' : '')}>{display.main}</div>
diff --git a/src/biz/SegmentCard.tsx b/src/biz/SegmentCard.tsx
index 66fa963..289627c 100644
--- a/src/biz/SegmentCard.tsx
+++ b/src/biz/SegmentCard.tsx
@@ -46,7 +46,7 @@ const SummarizeItemOverview = (props: {
     if (event.altKey) { // 复制
       navigator.clipboard.writeText(overviewItem.key).catch(console.error)
     } else {
-      move(time)
+      move(time, false)
     }
   }, [overviewItem.key, move, time])
 
diff --git a/src/biz/SegmentItem.tsx b/src/biz/SegmentItem.tsx
index 80e2956..0e42e43 100644
--- a/src/biz/SegmentItem.tsx
+++ b/src/biz/SegmentItem.tsx
@@ -33,7 +33,15 @@ const SegmentItem = (props: {
     if (event.altKey) { // 复制
       navigator.clipboard.writeText(item.content).catch(console.error)
     } else {
-      move(item.from)
+      move(item.from, false)
+    }
+  }, [item.content, item.from, move])
+
+  const move2Callback = useCallback((event: any) => {
+    if (event.altKey) { // 复制
+      navigator.clipboard.writeText(item.content).catch(console.error)
+    } else {
+      move(item.from, true)
     }
   }, [item.content, item.from, move])
 
@@ -63,6 +71,7 @@ const SegmentItem = (props: {
         isIn={isIn}
         last={last}
         moveCallback={moveCallback}
+        move2Callback={move2Callback}
       />
       :
       <NormalSegmentItem
@@ -70,6 +79,7 @@ const SegmentItem = (props: {
         idx={idx}
         isIn={isIn}
         moveCallback={moveCallback}
+        move2Callback={move2Callback}
       />
     }
   </span>
diff --git a/src/chrome/content-script.cjs b/src/chrome/content-script.cjs
index 9b876f4..5882c19 100644
--- a/src/chrome/content-script.cjs
+++ b/src/chrome/content-script.cjs
@@ -158,6 +158,9 @@ window.addEventListener("message", (event) => {
     const video = getVideoElement()
     if (video) {
       video.currentTime = data.time
+      if (data.togglePause) {
+        video.paused ? video.play() : video.pause()
+      }
     }
   }
 
diff --git a/src/hooks/useKeyService.ts b/src/hooks/useKeyService.ts
new file mode 100644
index 0000000..d346304
--- /dev/null
+++ b/src/hooks/useKeyService.ts
@@ -0,0 +1,59 @@
+import {useEffect} from 'react'
+import {useMemoizedFn} from 'ahooks/es'
+import {useAppSelector} from './redux'
+import useSubtitle from './useSubtitle'
+
+const useKeyService = () => {
+  const curIdx = useAppSelector(state => state.env.curIdx)
+  const data = useAppSelector(state => state.env.data)
+  const {move} = useSubtitle()
+
+  const onKeyDown = useMemoizedFn((e: KeyboardEvent) => {
+    // 有按其他控制键时，不触发
+    if (e.ctrlKey || e.metaKey || e.shiftKey) {
+      return
+    }
+
+    let cursorInInput = false
+    if (document.activeElement != null) {
+      const tagName = document.activeElement.tagName
+      if (tagName === 'INPUT' || tagName === 'TEXTAREA') {
+        cursorInInput = true
+      }
+    }
+    let prevent = false
+
+    // up arrow
+    if (e.key === 'ArrowUp') {
+      if (curIdx && (data != null) && !cursorInInput) {
+        prevent = true
+        const newCurIdx = Math.max(curIdx - 1, 0)
+        move(data.body[newCurIdx].from, false)
+      }
+    }
+    // down arrow
+    if (e.key === 'ArrowDown') {
+      if (curIdx !== undefined && (data != null) && !cursorInInput) {
+        prevent = true
+        const newCurIdx = Math.min(curIdx + 1, data.body.length - 1)
+        move(data.body[newCurIdx].from, false)
+      }
+    }
+
+    // 阻止默认事件
+    if (prevent) {
+      e.preventDefault()
+      e.stopPropagation()
+    }
+  })
+
+  // 检测快捷键
+  useEffect(() => {
+    document.addEventListener('keydown', onKeyDown)
+    return () => {
+      document.removeEventListener('keydown', onKeyDown)
+    }
+  }, [onKeyDown])
+}
+
+export default useKeyService
diff --git a/src/hooks/useSubtitle.ts b/src/hooks/useSubtitle.ts
index a63eedf..26987b3 100644
--- a/src/hooks/useSubtitle.ts
+++ b/src/hooks/useSubtitle.ts
@@ -5,8 +5,8 @@ import {setNeedScroll} from '../redux/envReducer'
 const useSubtitle = () => {
   const dispatch = useAppDispatch()
 
-  const move = useCallback((time: number) => {
-    window.parent.postMessage({type: 'move', time}, '*')
+  const move = useCallback((time: number, togglePause: boolean) => {
+    window.parent.postMessage({type: 'move', time, togglePause}, '*')
   }, [])
 
   const scrollIntoView = useCallback((ref: React.RefObject<HTMLDivElement>) => {