diff --git a/web/src/features/playback/player-bar.tsx b/web/src/features/playback/player-bar.tsx
index e054d20..c3d3862 100644
--- a/web/src/features/playback/player-bar.tsx
+++ b/web/src/features/playback/player-bar.tsx
@@ -1,11 +1,11 @@
 import { ListMusic, MessageCircle, SkipForward, Volume2, VolumeX } from 'lucide-react'
-import { useEffect, useRef, useState } from 'react'
+import { useEffect, useRef } from 'react'
 import { roomStore } from '@/core/room'
 import { sourceName } from '@/features/queue'
 import { bookTitle } from '@/shared/lib/book-title'
 import { formatDuration } from '@/shared/lib/time'
 import { useStore } from '@/shared/lib/use-store'
-import { Artwork, AsyncIconButton, IconButton } from '@/shared/ui'
+import { Artwork, AsyncIconButton, IconButton, VolumeInput } from '@/shared/ui'
 import { playerStore } from './player-store'
 import { volumeStore } from './volume-store'
 import './playback.css'
@@ -65,26 +65,7 @@ export function PlayerBar({ onSkip, onLyrics, onQueue, onChat, queueOpen, chatOp
   const connected = useStore(roomStore, s => s.status === 'open')
   const volume = useStore(volumeStore, s => s.volume)
   const muted = useStore(volumeStore, s => s.muted)
-  const [volumeDraft, setVolumeDraft] = useState(String(volume))
-  const volumeEditingRef = useRef(false)
   const meta = nowPlaying?.entry.meta
-  useEffect(() => {
-    if (!volumeEditingRef.current)
-      setVolumeDraft(String(volume))
-  }, [volume])
-  const commitVolumeDraft = () => {
-    const parsed = Number(volumeDraft)
-    if (volumeDraft.trim() === '' || !Number.isFinite(parsed)) {
-      setVolumeDraft(String(volume))
-      return
-    }
-    const next = Math.min(100, Math.max(0, Math.round(parsed)))
-    volumeStore.setVolume(next)
-    setVolumeDraft(String(next))
-    if (muted && next > 0)
-      volumeStore.setMuted(false)
-  }
-
   const source = nowPlaying && sourceName(nowPlaying.entry.track)
   return (
     <section className="player-bar" aria-label="播放器">
@@ -114,49 +95,15 @@ export function PlayerBar({ onSkip, onLyrics, onQueue, onChat, queueOpen, chatOp
         </div>
         <div className="player-tools">
           <IconButton icon={muted ? VolumeX : Volume2} label={muted ? '取消静音' : '静音'} onClick={() => volumeStore.setMuted(!muted)} />
-          <div className="volume-control">
-            <input
-              className="volume-slider"
-              type="range"
-              min="0"
-              max="100"
-              value={muted ? 0 : volume}
-              aria-label="音量"
-              onChange={(event) => {
-                const next = Number(event.target.value)
-                volumeStore.setVolume(next)
-                setVolumeDraft(String(next))
-                if (muted && next > 0)
-                  volumeStore.setMuted(false)
-              }}
-            />
-            <input
-              className="volume-input"
-              type="number"
-              min="0"
-              max="100"
-              step="1"
-              inputMode="numeric"
-              value={volumeDraft}
-              aria-label="音量百分比"
-              onFocus={() => {
-                volumeEditingRef.current = true
-              }}
-              onChange={event => setVolumeDraft(event.target.value)}
-              onBlur={() => {
-                volumeEditingRef.current = false
-                commitVolumeDraft()
-              }}
-              onKeyDown={(event) => {
-                if (event.key !== 'Enter')
-                  return
-                event.preventDefault()
-                commitVolumeDraft()
-                event.currentTarget.blur()
-              }}
-            />
-            <span className="volume-unit" aria-hidden="true">%</span>
-          </div>
+          <VolumeInput
+            volume={volume}
+            sliderValue={muted ? 0 : volume}
+            onCommit={(next) => {
+              volumeStore.setVolume(next)
+              if (muted && next > 0)
+                volumeStore.setMuted(false)
+            }}
+          />
           <IconButton icon={MessageCircle} label="房间聊天" className="player-panel-toggle" disabled={!canOpenPanels} aria-pressed={chatOpen} onClick={onChat} />
           <IconButton icon={ListMusic} label="播放列表" className="player-panel-toggle" disabled={!canOpenPanels} aria-pressed={queueOpen} onClick={onQueue} />
         </div>
diff --git a/web/src/features/settings/settings-page.tsx b/web/src/features/settings/settings-page.tsx
index 91c4f53..5b5ee63 100644
--- a/web/src/features/settings/settings-page.tsx
+++ b/web/src/features/settings/settings-page.tsx
@@ -6,7 +6,7 @@ import { errorMessage } from '@/core/errors'
 import { historyStore, searchLimits } from '@/features/history'
 import { reminderStore, requestNotificationPermission, systemNotificationsSupported, volumeStore } from '@/features/playback'
 import { useStore } from '@/shared/lib/use-store'
-import { notificationStore } from '@/shared/ui'
+import { notificationStore, VolumeInput } from '@/shared/ui'
 import { appearanceStore, fontSizes, themes } from './appearance-store'
 import { performanceLevels, performanceStore } from './performance-store'
 import { profileStore } from './profile-store'
@@ -208,27 +208,7 @@ export function SettingsPage() {
                 <h2 id="settings-playback-title" className="text-ui-lg">播放</h2>
                 <div className="settings-group">
                   <SettingRow id="settings-volume" title="音量" description="只调整这台设备的播放音量。" field>
-                    <div className="settings-volume-control">
-                      <input id="settings-volume" aria-describedby="settings-volume-description" type="range" min="0" max="100" value={draft.volume} aria-label="音量滑块" onChange={event => update('volume', Number(event.target.value))} />
-                      <div className="settings-volume-input-control">
-                        <input
-                          className="settings-volume-input"
-                          type="number"
-                          min="0"
-                          max="100"
-                          step="1"
-                          inputMode="numeric"
-                          value={draft.volume}
-                          aria-label="音量百分比"
-                          onChange={(event) => {
-                            const value = Number(event.target.value)
-                            if (Number.isFinite(value))
-                              update('volume', Math.min(100, Math.max(0, Math.round(value))))
-                          }}
-                        />
-                        <span className="settings-volume-unit" aria-hidden="true">%</span>
-                      </div>
-                    </div>
+                    <VolumeInput id="settings-volume" className="settings-volume-control" volume={draft.volume} onCommit={next => update('volume', next)} />
                   </SettingRow>
                   <SettingRow id="settings-muted" title="静音" description="暂时关闭这台设备的声音。">
                     <input id="settings-muted" aria-describedby="settings-muted-description" className="settings-switch" type="checkbox" role="switch" checked={draft.muted} onChange={event => update('muted', event.target.checked)} />
diff --git a/web/src/features/settings/settings.css b/web/src/features/settings/settings.css
index 79c65da..8ec73bc 100644
--- a/web/src/features/settings/settings.css
+++ b/web/src/features/settings/settings.css
@@ -18,11 +18,11 @@
 .settings-row-control select:disabled, .settings-row-control input:disabled { opacity: .5; cursor: not-allowed; }
 .settings-row-field .settings-row-control { width: 280px; }
 .settings-volume-control { display: flex; align-items: center; gap: 16px; width: 100%; }
-.settings-volume-input-control { display: flex; align-items: center; gap: 4px; }
-.settings-volume-input { -moz-appearance: textfield; }
-.settings-volume-input::-webkit-inner-spin-button, .settings-volume-input::-webkit-outer-spin-button { margin: 0; -webkit-appearance: none; }
-.settings-volume-input { box-sizing: border-box; width: 5ch; padding: 6px 4px; text-align: center; font-variant-numeric: tabular-nums; }
-.settings-volume-unit { color: var(--color-foreground-subtle); font-size: var(--text-ui-xs); }
+.settings-volume-control .volume-input-control { display: flex; align-items: center; gap: 4px; }
+.settings-volume-control .volume-input { -moz-appearance: textfield; }
+.settings-volume-control .volume-input::-webkit-inner-spin-button, .settings-volume-control .volume-input::-webkit-outer-spin-button { margin: 0; -webkit-appearance: none; }
+.settings-volume-control .volume-input { box-sizing: border-box; width: 5ch; padding: 6px 4px; text-align: center; font-variant-numeric: tabular-nums; }
+.settings-volume-control .volume-unit { color: var(--color-foreground-subtle); font-size: var(--text-ui-xs); }
 .settings-switch[type='checkbox'] { appearance: none; position: relative; width: 40px; height: 24px; margin: 0; border: 1px solid var(--color-border-hover); border-radius: 999px; background: var(--color-selected); cursor: pointer; }
 .settings-switch[type='checkbox']::before { content: ''; display: block; width: 18px; height: 18px; margin: 2px; border-radius: 50%; background: var(--color-foreground); transform: translateX(0); transition: transform 150ms ease; }
 .settings-switch[type='checkbox']:checked { border-color: var(--color-primary); background: var(--color-primary); }
diff --git a/web/src/shared/ui/index.ts b/web/src/shared/ui/index.ts
index d9bf14e..f0bee99 100644
--- a/web/src/shared/ui/index.ts
+++ b/web/src/shared/ui/index.ts
@@ -12,3 +12,4 @@ export { Skeleton } from './skeleton'
 export { SongArtwork } from './song-artwork'
 export { SongList } from './song-list'
 export type { SongAction, SongItem } from './song-list'
+export { VolumeInput } from './volume-input'
diff --git a/web/src/shared/ui/volume-editor.test.ts b/web/src/shared/ui/volume-editor.test.ts
new file mode 100644
index 0000000..682ef97
--- /dev/null
+++ b/web/src/shared/ui/volume-editor.test.ts
@@ -0,0 +1,39 @@
+import { describe, expect, it } from 'vitest'
+import { beginVolumeEdit, changeVolumeDraft, commitVolumeDraft, initialVolumeEditor, syncVolumeDraft } from './volume-editor'
+
+describe('音量草稿', () => {
+  it('非编辑时同步外部音量', () => {
+    const editor = initialVolumeEditor(75)
+    expect(syncVolumeDraft(editor, 40)).toEqual({ draft: '40', editing: false })
+  })
+
+  it('编辑期间不被外部音量覆盖', () => {
+    const editor = changeVolumeDraft(beginVolumeEdit(initialVolumeEditor(75)), '20')
+    expect(syncVolumeDraft(editor, 90)).toEqual({ draft: '20', editing: true })
+  })
+
+  it('提交空值或非法输入时恢复有效音量', () => {
+    for (const draft of ['', '   ', 'abc']) {
+      const editor = changeVolumeDraft(beginVolumeEdit(initialVolumeEditor(75)), draft)
+      expect(commitVolumeDraft(editor, 75)).toEqual({ editor: { draft: '75', editing: false }, value: null })
+    }
+  })
+
+  it('提交时取整并限制范围', () => {
+    for (const testCase of [
+      { draft: '-1', want: 0 },
+      { draft: '0', want: 0 },
+      { draft: '12.6', want: 13 },
+      { draft: '100', want: 100 },
+      { draft: '101', want: 100 },
+    ]) {
+      const editor = changeVolumeDraft(beginVolumeEdit(initialVolumeEditor(75)), testCase.draft)
+      expect(commitVolumeDraft(editor, 75).value).toBe(testCase.want)
+    }
+  })
+
+  it('提交后退出编辑状态并显示提交值', () => {
+    const editor = changeVolumeDraft(beginVolumeEdit(initialVolumeEditor(75)), '42')
+    expect(commitVolumeDraft(editor, 75)).toEqual({ editor: { draft: '42', editing: false }, value: 42 })
+  })
+})
diff --git a/web/src/shared/ui/volume-editor.ts b/web/src/shared/ui/volume-editor.ts
new file mode 100644
index 0000000..91614eb
--- /dev/null
+++ b/web/src/shared/ui/volume-editor.ts
@@ -0,0 +1,29 @@
+export interface VolumeEditor {
+  draft: string
+  editing: boolean
+}
+
+export function initialVolumeEditor(volume: number): VolumeEditor {
+  return { draft: String(volume), editing: false }
+}
+
+export function beginVolumeEdit(editor: VolumeEditor): VolumeEditor {
+  return { ...editor, editing: true }
+}
+
+export function changeVolumeDraft(_editor: VolumeEditor, draft: string): VolumeEditor {
+  return { draft, editing: true }
+}
+
+export function syncVolumeDraft(editor: VolumeEditor, volume: number): VolumeEditor {
+  return editor.editing ? editor : { draft: String(volume), editing: false }
+}
+
+export function commitVolumeDraft(editor: VolumeEditor, fallbackVolume: number): { editor: VolumeEditor, value: number | null } {
+  const parsed = Number(editor.draft)
+  if (editor.draft.trim() === '' || !Number.isFinite(parsed)) {
+    return { editor: { draft: String(fallbackVolume), editing: false }, value: null }
+  }
+  const value = Math.min(100, Math.max(0, Math.round(parsed)))
+  return { editor: { draft: String(value), editing: false }, value }
+}
diff --git a/web/src/shared/ui/volume-input.tsx b/web/src/shared/ui/volume-input.tsx
new file mode 100644
index 0000000..760b24f
--- /dev/null
+++ b/web/src/shared/ui/volume-input.tsx
@@ -0,0 +1,64 @@
+import { useState } from 'react'
+import { beginVolumeEdit, changeVolumeDraft, commitVolumeDraft, initialVolumeEditor, syncVolumeDraft } from './volume-editor'
+
+interface VolumeInputProps {
+  volume: number
+  onCommit: (volume: number) => void
+  sliderValue?: number
+  id?: string
+  className?: string
+  disabled?: boolean
+}
+
+export function VolumeInput({ volume, onCommit, sliderValue, id, className = '', disabled = false }: VolumeInputProps) {
+  const [editor, setEditor] = useState(() => initialVolumeEditor(volume))
+  const syncedEditor = syncVolumeDraft(editor, volume)
+  const commit = () => {
+    const result = commitVolumeDraft(syncedEditor, volume)
+    setEditor(result.editor)
+    if (result.value !== null)
+      onCommit(result.value)
+  }
+  return (
+    <div className={`volume-control ${className}`}>
+      <input
+        id={id}
+        className="volume-slider"
+        type="range"
+        min="0"
+        max="100"
+        value={sliderValue ?? volume}
+        aria-label="音量"
+        disabled={disabled}
+        onChange={(event) => {
+          const next = Number(event.target.value)
+          setEditor(current => changeVolumeDraft(current, String(next)))
+          onCommit(next)
+        }}
+      />
+      <div className="volume-input-control">
+        <input
+          className="volume-input"
+          type="number"
+          min="0"
+          max="100"
+          step="1"
+          inputMode="numeric"
+          value={syncedEditor.draft}
+          aria-label="音量百分比"
+          disabled={disabled}
+          onFocus={() => setEditor(current => beginVolumeEdit(current))}
+          onChange={event => setEditor(current => changeVolumeDraft(current, event.target.value))}
+          onBlur={commit}
+          onKeyDown={(event) => {
+            if (event.key !== 'Enter')
+              return
+            event.preventDefault()
+            event.currentTarget.blur()
+          }}
+        />
+        <span className="volume-unit" aria-hidden="true">%</span>
+      </div>
+    </div>
+  )
+}