diff --git a/src/App.vue b/src/App.vue
index fd75d99b..916176a7 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -32,6 +32,7 @@ import { normalizeThemeMaterialAccent } from '@/utils/glassColor'
 import { configureApexChartsTheme } from '@/utils/apexCharts'
 import { useGlobalOfflineStatus, type ConnectionFailureReason } from '@/composables/useOfflineStatus'
 import { useSystemRestartStatus } from '@/composables/useSystemRestart'
+import { loadMediaSources } from '@/composables/useMediaSources'
 import { useAppActivityLifecycle } from '@/composables/useAppActivityLifecycle'
 import { useGlassWallpaperTransaction } from '@/composables/useGlassWallpaperTransaction'
 import {
@@ -913,6 +914,7 @@ async function initializeAuthenticatedState() {
     globalLoadingStateManager.setLoadingState('global-settings', true)
     await globalSettingsStore.initialize()
     await globalSettingsStore.loadUserSettings()
+    await loadMediaSources()
   } finally {
     globalLoadingStateManager.setLoadingState('global-settings', false)
   }
diff --git a/src/api/types.ts b/src/api/types.ts
index 58e352e2..a2d88ee4 100644
--- a/src/api/types.ts
+++ b/src/api/types.ts
@@ -17,6 +17,13 @@ export enum MediaSource {
 
 export type MediaDataSource = `${MediaSource}` | (string & {})
 
+/** 后端返回的媒体来源注册描述，供各类来源选择器共享。 */
+export interface MediaSourceInfo {
+  name: string
+  media_source: MediaDataSource
+  media_types: string[]
+}
+
 // 手动刮削选项
 export interface ManualScrapeOptions {
   // 媒体数据源
diff --git a/src/components/dialog/AddSubtitleDownloadDialog.vue b/src/components/dialog/AddSubtitleDownloadDialog.vue
index 5b32e050..74d40f79 100644
--- a/src/components/dialog/AddSubtitleDownloadDialog.vue
+++ b/src/components/dialog/AddSubtitleDownloadDialog.vue
@@ -8,6 +8,7 @@ import { useI18n } from 'vue-i18n'
 import MediaIdSelector from '../misc/MediaIdSelector.vue'
 import { useGlobalSettingsStore } from '@/stores'
 import { isMediaDataSource, isValidMediaSourceId } from '@/utils/mediaId'
+import { useMediaSources } from '@/composables/useMediaSources'
 
 // 多语言支持
 const { t } = useI18n()
@@ -58,6 +59,8 @@ const normalizedMediaId = computed(() => selectedMediaId.value?.trim() || undefi
 const hasValidMediaIdentity = computed(
   () => Boolean(normalizedMediaId.value) && isValidMediaSourceId(normalizedMediaId.value, mediaSource.value),
 )
+const { mediaSourceItems: getMediaSourceItems } = useMediaSources()
+const customMediaSourceItems = getMediaSourceItems('media')
 
 const mediaSourceItems = computed<{ title: string; value: MediaDataSource }[]>(() => {
   const labels: Partial<Record<MediaDataSource, string>> = {
@@ -75,7 +78,10 @@ const mediaSourceItems = computed<{ title: string; value: MediaDataSource }[]>((
     migu: 'Migu Video',
     tencentvideodiscover: 'Tencent Video',
   }
-  return Object.values(MediaSource).map(value => ({ title: labels[value] ?? value, value }))
+  return [
+    ...Object.values(MediaSource).map(value => ({ title: labels[value] ?? value, value })),
+    ...customMediaSourceItems.value,
+  ]
 })
 
 // 当前数据源对应的原生ID标签。
diff --git a/src/components/dialog/CacheReidentifyDialog.vue b/src/components/dialog/CacheReidentifyDialog.vue
index 781b939a..15f88110 100644
--- a/src/components/dialog/CacheReidentifyDialog.vue
+++ b/src/components/dialog/CacheReidentifyDialog.vue
@@ -2,6 +2,7 @@
 import { useI18n } from 'vue-i18n'
 import type { MediaDataSource, MusicEntityType } from '@/api/types'
 import { isMediaDataSource, isMusicMediaSource } from '@/utils/mediaId'
+import { useMediaSources } from '@/composables/useMediaSources'
 
 const { t } = useI18n()
 
@@ -41,6 +42,9 @@ const mediaSource = ref<MediaDataSource>(
 const mediaId = ref<string>()
 const musicType = ref<Exclude<MusicEntityType, 'artist'>>(props.musicType)
 const isMusicSelection = computed(() => isMusicMediaSource(mediaSource.value))
+const { mediaSourceItems: getMediaSourceItems } = useMediaSources()
+const customMediaSourceItems = getMediaSourceItems('media')
+const customMusicSourceItems = getMediaSourceItems('music')
 const musicEntityItems = computed(() => [
   { title: t('setting.cache.musicType.recording'), value: 'recording' },
   { title: t('setting.cache.musicType.album'), value: 'album' },
@@ -53,6 +57,8 @@ const mediaSourceItems = computed<{ title: string; value: MediaDataSource }[]>((
   { title: t('setting.cache.recognitionSource.musicbrainz'), value: 'musicbrainz' },
   { title: t('setting.cache.recognitionSource.theaudiodb'), value: 'theaudiodb' },
   { title: t('setting.cache.recognitionSource.doubanmusic'), value: 'doubanmusic' },
+  ...customMediaSourceItems.value,
+  ...customMusicSourceItems.value,
 ])
 
 const mediaIdLabel = computed(() => {
diff --git a/src/components/dialog/ReorganizeDialog.vue b/src/components/dialog/ReorganizeDialog.vue
index bf37732a..830a6535 100644
--- a/src/components/dialog/ReorganizeDialog.vue
+++ b/src/components/dialog/ReorganizeDialog.vue
@@ -24,6 +24,7 @@ import { useI18n } from 'vue-i18n'
 import { useDisplay } from 'vuetify'
 import { useGlobalSettingsStore } from '@/stores'
 import { isMusicMediaSource, isValidMediaSourceId } from '@/utils/mediaId'
+import { useMediaSources } from '@/composables/useMediaSources'
 
 // 国际化
 const { t } = useI18n()
@@ -44,6 +45,10 @@ const props = defineProps({
 const globalSettingsStore = useGlobalSettingsStore()
 const globalSettings = globalSettingsStore.globalSettings
 
+const { mediaSourceItems: getMediaSourceItems } = useMediaSources()
+const customMediaSourceItems = getMediaSourceItems('media')
+const customMusicSourceItems = getMediaSourceItems('music')
+
 const mediaSourceItems = computed<{ title: string; value: MediaDataSource | null }[]>(() => [
   { title: t('dialog.reorganize.auto'), value: null },
   { title: t('setting.cache.recognitionSource.themoviedb'), value: 'themoviedb' },
@@ -53,6 +58,8 @@ const mediaSourceItems = computed<{ title: string; value: MediaDataSource | null
   { title: t('setting.cache.recognitionSource.musicbrainz'), value: 'musicbrainz' },
   { title: t('setting.cache.recognitionSource.theaudiodb'), value: 'theaudiodb' },
   { title: t('setting.cache.recognitionSource.doubanmusic'), value: 'doubanmusic' },
+  ...customMediaSourceItems.value,
+  ...customMusicSourceItems.value,
 ])
 
 /** 获取后台设置中的默认识别数据源，未知值兼容回退到 TheMovieDb。 */
diff --git a/src/components/dialog/ScrapeDialog.vue b/src/components/dialog/ScrapeDialog.vue
index 3eae8d95..f233a6f9 100644
--- a/src/components/dialog/ScrapeDialog.vue
+++ b/src/components/dialog/ScrapeDialog.vue
@@ -4,6 +4,7 @@ import { useGlobalSettingsStore } from '@/stores'
 import { useI18n } from 'vue-i18n'
 import MediaIdSelector from '../misc/MediaIdSelector.vue'
 import { isMusicMediaSource, isValidMediaSourceId } from '@/utils/mediaId'
+import { useMediaSources } from '@/composables/useMediaSources'
 
 const { t } = useI18n()
 
@@ -24,6 +25,10 @@ const emit = defineEmits<{
   (event: 'update:modelValue', value: boolean): void
 }>()
 
+const { mediaSourceItems: getMediaSourceItems } = useMediaSources()
+const customMediaSourceItems = getMediaSourceItems('media')
+const customMusicSourceItems = getMediaSourceItems('music')
+
 const mediaSourceItems = computed<{ title: string; value: MediaDataSource }[]>(() => [
   { title: t('setting.cache.recognitionSource.themoviedb'), value: 'themoviedb' },
   { title: t('setting.cache.recognitionSource.douban'), value: 'douban' },
@@ -32,6 +37,8 @@ const mediaSourceItems = computed<{ title: string; value: MediaDataSource }[]>((
   { title: t('setting.cache.recognitionSource.musicbrainz'), value: 'musicbrainz' },
   { title: t('setting.cache.recognitionSource.theaudiodb'), value: 'theaudiodb' },
   { title: t('setting.cache.recognitionSource.doubanmusic'), value: 'doubanmusic' },
+  ...customMediaSourceItems.value,
+  ...customMusicSourceItems.value,
 ])
 
 const globalSettingsStore = useGlobalSettingsStore()
diff --git a/src/components/dialog/SearchBarDialog.vue b/src/components/dialog/SearchBarDialog.vue
index bf955229..2d7d3fbc 100644
--- a/src/components/dialog/SearchBarDialog.vue
+++ b/src/components/dialog/SearchBarDialog.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import api from '@/api'
-import type { Site, Plugin, Subscribe } from '@/api/types'
+import type { MediaDataSource, Site, Plugin, Subscribe } from '@/api/types'
 import { getNavMenus, getSettingTabs } from '@/router/i18n-menu'
 import { NavMenu } from '@/@layouts/types'
 import { useUserStore, useGlobalSettingsStore } from '@/stores'
@@ -9,6 +9,7 @@ import { useI18n } from 'vue-i18n'
 import { useDisplay } from 'vuetify'
 import { VDialog, VMenu } from 'vuetify/components'
 import { buildUserPermissionContext, hasPermission, filterMenusByPermission } from '@/utils/permission'
+import { useMediaSources } from '@/composables/useMediaSources'
 
 // 显示器宽度
 const display = useDisplay()
@@ -99,7 +100,7 @@ const searchOverlayProps = computed(() =>
 // 搜索词
 const searchWord = ref<string | null>(null)
 
-type MediaSearchSource = 'themoviedb' | 'douban' | 'bangumi' | 'anilist' | 'musicbrainz' | 'theaudiodb' | 'doubanmusic'
+type MediaSearchSource = MediaDataSource
 type MediaSearchType = 'media' | 'music' | 'collection' | 'person'
 
 interface MediaSearchSourceOption {
@@ -123,6 +124,21 @@ const selectedMediaSearchSources = reactive<Record<MediaSearchType, MediaSearchS
   person: [],
 })
 
+const { mediaSourceItems } = useMediaSources()
+const customMediaSources = mediaSourceItems('media')
+const customMusicSources = mediaSourceItems('music')
+/** 将来源目录项转换为搜索来源选项，保持展示名与请求值分离。 */
+const customSearchSourceOptions = (sources: typeof customMediaSources) =>
+  computed<MediaSearchSourceOption[]>(() =>
+    sources.value.map(source => ({
+      label: source.title,
+      name: source.title,
+      value: source.value,
+    })),
+  )
+const customMediaSearchSources = customSearchSourceOptions(customMediaSources)
+const customMusicSearchSources = customSearchSourceOptions(customMusicSources)
+
 // 全局“媒体搜索数据源”配置（SEARCH_SOURCE），用于搜索框默认勾选，保证基础设置生效。
 const configuredMediaSearchSources = computed((): MediaSearchSource[] => {
   const raw = globalSettingsStore.get('SEARCH_SOURCE')
@@ -209,8 +225,8 @@ const mediaSearchSourceOptions = computed<Record<MediaSearchType, MediaSearchSou
   }
 
   return {
-    media: [themoviedb, douban, bangumi, anilist],
-    music: [musicbrainz, theaudiodb, doubanmusic],
+    media: [themoviedb, douban, bangumi, anilist, ...customMediaSearchSources.value],
+    music: [musicbrainz, theaudiodb, doubanmusic, ...customMusicSearchSources.value],
     collection: [themoviedb],
     person: [themoviedb, douban],
   }
diff --git a/src/composables/useMediaSources.ts b/src/composables/useMediaSources.ts
new file mode 100644
index 00000000..cce408ee
--- /dev/null
+++ b/src/composables/useMediaSources.ts
@@ -0,0 +1,46 @@
+import { computed } from 'vue'
+import api from '@/api'
+import type { MediaSourceInfo } from '@/api/types'
+import { MediaSource } from '@/api/types'
+import { getMediaSourceCatalog, setMediaSourceCatalog, supportsMediaSourceType } from '@/utils/mediaId'
+
+export type MediaSourceOptionKind = 'media' | 'music'
+
+let mediaSourceLoadPromise: Promise<void> | null = null
+
+/** 加载后端注册的媒体来源目录；同一页面会话只发起一次请求。 */
+export function loadMediaSources(): Promise<void> {
+  if (mediaSourceLoadPromise) return mediaSourceLoadPromise
+  mediaSourceLoadPromise = api
+    .get<MediaSourceInfo[]>('media/source')
+    .then(sources => setMediaSourceCatalog(Array.isArray(sources) ? sources : []))
+    .catch(error => {
+      console.warn('加载媒体数据源失败，继续使用内置来源：', error)
+    })
+  return mediaSourceLoadPromise
+}
+
+/** 提供来源选择器所需的插件扩展项，并按影视/音乐能力过滤。 */
+export function useMediaSources() {
+  const catalog = getMediaSourceCatalog()
+  const customMediaSources = computed(() => {
+    const builtin = new Set<string>(Object.values(MediaSource))
+    return catalog.value.filter(source => !builtin.has(source.media_source))
+  })
+
+  const mediaSourceItems = (kind?: MediaSourceOptionKind) =>
+    computed(() =>
+      customMediaSources.value
+        .filter(source => {
+          return !kind || supportsMediaSourceType(source, kind)
+        })
+        .map(source => ({ title: source.name, value: source.media_source })),
+    )
+
+  return {
+    catalog,
+    customMediaSources,
+    mediaSourceItems,
+    loadMediaSources,
+  }
+}
diff --git a/src/utils/__tests__/mediaId.spec.ts b/src/utils/__tests__/mediaId.spec.ts
index a616e4f1..b273f571 100644
--- a/src/utils/__tests__/mediaId.spec.ts
+++ b/src/utils/__tests__/mediaId.spec.ts
@@ -1,4 +1,10 @@
-import { isMusicMediaSource, isValidMediaSourceId, parseMediaDataSources } from '@/utils/mediaId'
+import {
+  isMusicMediaSource,
+  isValidMediaSourceId,
+  parseMediaDataSources,
+  setMediaSourceCatalog,
+  supportsMediaSourceType,
+} from '@/utils/mediaId'
 import { describe, expect, it } from 'vitest'
 
 describe('media source identity utils', () => {
@@ -6,6 +12,31 @@ describe('media source identity utils', () => {
     expect(isMusicMediaSource(source)).toBe(true)
   })
 
+  it('recognizes a plugin-registered music source', () => {
+    setMediaSourceCatalog([
+      {
+        name: 'Acme Music',
+        media_source: 'acme.music',
+        media_types: ['音乐'],
+      },
+    ])
+    expect(isMusicMediaSource('acme.music')).toBe(true)
+    setMediaSourceCatalog([])
+  })
+
+  it('keeps a source with mixed video and music capabilities in both lists', () => {
+    const source = {
+      media_types: ['电影', '电视剧', '音乐'],
+    }
+    expect(supportsMediaSourceType(source, 'media')).toBe(true)
+    expect(supportsMediaSourceType(source, 'music')).toBe(true)
+  })
+
+  it('accepts API-style media type keys for plugin sources', () => {
+    expect(supportsMediaSourceType({ media_types: ['movie', 'music'] }, 'media')).toBe(true)
+    expect(supportsMediaSourceType({ media_types: ['movie', 'music'] }, 'music')).toBe(true)
+  })
+
   it.each([
     ['themoviedb', ['themoviedb']],
     [' musicbrainz, theaudiodb,unknown,musicbrainz ', ['musicbrainz', 'theaudiodb', 'unknown']],
diff --git a/src/utils/mediaId.ts b/src/utils/mediaId.ts
index 7d10302d..df5a9e56 100644
--- a/src/utils/mediaId.ts
+++ b/src/utils/mediaId.ts
@@ -1,9 +1,43 @@
-import type { MediaDataSource } from '@/api/types'
+import { ref } from 'vue'
+import type { MediaDataSource, MediaSourceInfo } from '@/api/types'
 
 const MUSICBRAINZ_ID_PATTERN = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i
 const IMDB_ID_PATTERN = /^tt\d+$/i
 export const MUSIC_MEDIA_SOURCES = ['musicbrainz', 'theaudiodb', 'doubanmusic'] as const
 const MEDIA_SOURCE_PATTERN = /^[a-z][a-z0-9._-]{0,63}$/
+const mediaSourceCatalog = ref<MediaSourceInfo[]>([])
+
+const MUSIC_MEDIA_TYPES = new Set(['音乐', 'music'])
+const VIDEO_MEDIA_TYPES = new Set(['电影', '电视剧', 'movie', 'tv'])
+
+/** 更新宿主与插件合并后的来源目录，并保留合法来源的稳定顺序。 */
+export function setMediaSourceCatalog(sources: MediaSourceInfo[]) {
+  const seen = new Set<string>()
+  mediaSourceCatalog.value = sources.reduce<MediaSourceInfo[]>((catalog, source) => {
+    const value = source?.media_source?.toString().trim().toLowerCase()
+    if (!value || !MEDIA_SOURCE_PATTERN.test(value) || seen.has(value)) return catalog
+    seen.add(value)
+    catalog.push({ ...source, media_source: value })
+    return catalog
+  }, [])
+}
+
+/** 返回当前已加载的来源目录，供来源选择器构造选项。 */
+export function getMediaSourceCatalog() {
+  return mediaSourceCatalog
+}
+
+/** 判断注册来源是否声明了指定的影视或音乐能力。 */
+export function supportsMediaSourceType(
+  source: Pick<MediaSourceInfo, 'media_types'>,
+  kind: 'media' | 'music',
+): boolean {
+  const mediaTypes = (source.media_types ?? [])
+    .filter(type => typeof type === 'string')
+    .map(type => type.trim().toLowerCase())
+  const supportedTypes = kind === 'music' ? MUSIC_MEDIA_TYPES : VIDEO_MEDIA_TYPES
+  return mediaTypes.some(type => supportedTypes.has(type))
+}
 
 /** 判断外部输入是否为内置或插件注册的规范媒体来源标识。 */
 export function isMediaDataSource(value: unknown): value is MediaDataSource {
@@ -23,9 +57,14 @@ export function parseMediaDataSources(value: unknown): MediaDataSource[] {
   ]
 }
 
-/** 判断当前请求来源是否为内置音乐元数据源。 */
+/** 判断当前请求来源是否为内置或插件注册的音乐元数据源。 */
 export function isMusicMediaSource(source?: MediaDataSource): boolean {
-  return MUSIC_MEDIA_SOURCES.includes(source as (typeof MUSIC_MEDIA_SOURCES)[number])
+  const normalized = source?.toString().trim().toLowerCase()
+  if (!normalized) return false
+  return (
+    MUSIC_MEDIA_SOURCES.includes(normalized as (typeof MUSIC_MEDIA_SOURCES)[number]) ||
+    mediaSourceCatalog.value.some(item => item.media_source === normalized && supportsMediaSourceType(item, 'music'))
+  )
 }
 
 /** 按媒体数据源校验有固定格式的原生 ID，其余来源只要求非空。 */
diff --git a/src/views/setting/AccountSettingSearch.vue b/src/views/setting/AccountSettingSearch.vue
index 29dacdbf..e679ce67 100644
--- a/src/views/setting/AccountSettingSearch.vue
+++ b/src/views/setting/AccountSettingSearch.vue
@@ -5,6 +5,7 @@ import { getApiBusinessErrorMessage } from '@/api/client'
 import type { FilterRuleGroup, Site } from '@/api/types'
 import { useI18n } from 'vue-i18n'
 import { useSilentSettingRefresh } from '@/composables/useSilentSettingRefresh'
+import { useMediaSources } from '@/composables/useMediaSources'
 
 // 国际化
 const { t } = useI18n()
@@ -18,6 +19,9 @@ const props = defineProps({
 
 // 提示框
 const $toast = useToast()
+const { mediaSourceItems: getMediaSourceItems } = useMediaSources()
+const customMediaSourceItems = getMediaSourceItems('media')
+const customMusicSourceItems = getMediaSourceItems('music')
 
 // 所有站点
 const allSites = ref<Site[]>([])
@@ -36,7 +40,7 @@ const SystemSettings = ref<any>({
 })
 
 // 媒体信息数据源字典
-const mediaSourcesDict = [
+const mediaSourcesDict = computed(() => [
   {
     title: 'TheMovieDb',
     value: 'themoviedb',
@@ -65,7 +69,9 @@ const mediaSourcesDict = [
     title: '豆瓣音乐',
     value: 'doubanmusic',
   },
-]
+  ...customMediaSourceItems.value,
+  ...customMusicSourceItems.value,
+])
 
 // 当前选中的媒体信息数据源
 const selectedMediaSource = ref<string[]>([])
diff --git a/src/views/system/NameTestView.vue b/src/views/system/NameTestView.vue
index 75cf2c5e..995b8129 100644
--- a/src/views/system/NameTestView.vue
+++ b/src/views/system/NameTestView.vue
@@ -10,6 +10,7 @@ import { useGlobalSettingsStore } from '@/stores'
 import { getLogoUrl } from '@/utils/imageUtils'
 import { useI18n } from 'vue-i18n'
 import { isMusicMediaSource } from '@/utils/mediaId'
+import { useMediaSources } from '@/composables/useMediaSources'
 
 interface PipelineStep {
   icon: string
@@ -70,6 +71,9 @@ const emit = defineEmits<{ close: [] }>()
 // 国际化
 const { t } = useI18n()
 const globalSettingsStore = useGlobalSettingsStore()
+const { mediaSourceItems: getMediaSourceItems } = useMediaSources()
+const customMediaSourceItems = getMediaSourceItems('media')
+const customMusicSourceItems = getMediaSourceItems('music')
 
 const mediaSourceItems = computed<{ title: string; value: MediaDataSource }[]>(() => [
   { title: t('setting.cache.recognitionSource.themoviedb'), value: 'themoviedb' },
@@ -79,6 +83,8 @@ const mediaSourceItems = computed<{ title: string; value: MediaDataSource }[]>((
   { title: t('setting.cache.recognitionSource.musicbrainz'), value: 'musicbrainz' },
   { title: t('setting.cache.recognitionSource.theaudiodb'), value: 'theaudiodb' },
   { title: t('setting.cache.recognitionSource.doubanmusic'), value: 'doubanmusic' },
+  ...customMediaSourceItems.value,
+  ...customMusicSourceItems.value,
 ])
 
 // 获取后台默认识别数据源，未知值兼容回退到TheMovieDb。