diff --git a/src/api/admin/transcode.ts b/src/api/admin/transcode.ts
index fe436fa..88d7d27 100644
--- a/src/api/admin/transcode.ts
+++ b/src/api/admin/transcode.ts
@@ -1,7 +1,12 @@
 // Author: fruit.com.cn
 
 import request from '@/axios'
-import type { EpisodeTranscodeItem, MediaThumbnailResult, TranscodeTriggerResult } from './types'
+import type {
+  EpisodeTranscodeItem,
+  MediaThumbnailResult,
+  TranscodeBackfillResult,
+  TranscodeTriggerResult
+} from './types'
 
 /** 分集编辑页聚合查询转码任务、清晰度与帧图。 */
 export const getEpisodeTranscodeApi = (episodeId: number | string) => {
@@ -28,3 +33,11 @@ export const triggerMediaTranscodeApi = (mediaAssetId: string) => {
     url: `/admin/media/${mediaAssetId}/transcode`
   })
 }
+
+/** 手动补齐转码：扫描缺码率产物/帧图的分集并入队。 */
+export const runTranscodeBackfillApi = (batchSize?: number) => {
+  return request.post<TranscodeBackfillResult>({
+    url: '/admin/media/transcode/backfill',
+    params: batchSize ? { batchSize } : undefined
+  })
+}
diff --git a/src/api/admin/types.ts b/src/api/admin/types.ts
index 8641c5f..ccda91e 100644
--- a/src/api/admin/types.ts
+++ b/src/api/admin/types.ts
@@ -321,6 +321,16 @@ export interface TranscodeTriggerResult {
   status: string
 }
 
+export interface TranscodeBackfillItem {
+  episodeId: string
+  taskId: string
+}
+
+export interface TranscodeBackfillResult {
+  triggered: number
+  items: TranscodeBackfillItem[]
+}
+
 export interface BannerItem {
   id: number
   imageUrl: string
diff --git a/src/locales/en.ts b/src/locales/en.ts
index 26c7faa..88a012c 100644
--- a/src/locales/en.ts
+++ b/src/locales/en.ts
@@ -657,6 +657,11 @@ export default {
     saveFailed: 'Failed to save transcode settings',
     loadFailed: 'Failed to load transcode settings',
     noPermission: 'This account cannot manage transcode settings',
+    backfill: 'Backfill transcodes',
+    backfillTip: 'Scan episodes missing renditions or thumbnails and enqueue them for transcoding',
+    backfillDone: 'Enqueued {count} episodes into the transcode queue',
+    backfillEmpty: 'No episodes need transcoding',
+    backfillFailed: 'Failed to run transcode backfill',
     enabled: 'Enable transcode profile',
     enabledDescription:
       'Marks whether this transcode profile is enabled; the quality ladder is still validated when saved.',
diff --git a/src/locales/zh-CN.ts b/src/locales/zh-CN.ts
index 1387d44..47411df 100644
--- a/src/locales/zh-CN.ts
+++ b/src/locales/zh-CN.ts
@@ -648,6 +648,11 @@ export default {
     saveFailed: '转码设置保存失败',
     loadFailed: '转码设置加载失败',
     noPermission: '当前账号没有转码设置权限',
+    backfill: '立即补齐转码',
+    backfillTip: '扫描缺少清晰度产物或帧图的分集并自动入队转码',
+    backfillDone: '本轮已补入 {count} 个分集进入转码队列',
+    backfillEmpty: '没有需要补转的分集',
+    backfillFailed: '补齐转码执行失败',
     enabled: '启用转码配置',
     enabledDescription: '标记当前转码配置是否启用；保存时仍会校验下方档位。',
     segmentSeconds: 'HLS 分片时长（秒）',
diff --git a/src/views/systemManagement/TranscodeSettingsView.vue b/src/views/systemManagement/TranscodeSettingsView.vue
index a3fb062..4786497 100644
--- a/src/views/systemManagement/TranscodeSettingsView.vue
+++ b/src/views/systemManagement/TranscodeSettingsView.vue
@@ -14,6 +14,7 @@ const {
   rules,
   loading,
   saving,
+  backfilling,
   loadError,
   canManage,
   qualityRules,
@@ -23,7 +24,8 @@ const {
   loadProfile,
   addRung,
   deleteRung,
-  saveProfile
+  saveProfile,
+  runBackfill
 } = useTranscodeSettings()
 </script>
 
@@ -33,6 +35,18 @@ const {
     :title="t('transcodeSettings.title')"
     :description="t('transcodeSettings.description')"
   >
+    <el-tooltip :content="t('transcodeSettings.backfillTip')" placement="top">
+      <el-button
+        type="success"
+        plain
+        :loading="backfilling"
+        :disabled="!canManage || loading"
+        @click="runBackfill"
+      >
+        <AppIcon v-if="!backfilling" :icon="AppIcons.videoPlay" />
+        {{ t('transcodeSettings.backfill') }}
+      </el-button>
+    </el-tooltip>
     <el-button :disabled="loading" @click="loadProfile">
       <AppIcon :icon="AppIcons.refresh" />
       {{ t('transcodeSettings.reload') }}
diff --git a/src/views/systemManagement/composables/transcodeSettingsActions.ts b/src/views/systemManagement/composables/transcodeSettingsActions.ts
index 126184a..aeb7af0 100644
--- a/src/views/systemManagement/composables/transcodeSettingsActions.ts
+++ b/src/views/systemManagement/composables/transcodeSettingsActions.ts
@@ -5,6 +5,7 @@ import type { ComputedRef, Ref } from 'vue'
 import { ElMessage } from 'element-plus'
 import type { FormInstance } from 'element-plus'
 import { getMediaTranscodeProfileApi, saveMediaTranscodeProfileApi } from '@/api/admin/media'
+import { runTranscodeBackfillApi } from '@/api/admin/transcode'
 import type { MediaTranscodeProfile } from '@/api/admin/types'
 import { applyProfileToForm, buildProfilePayload } from './transcodeProfileModel'
 
@@ -15,6 +16,7 @@ interface SettingsContext {
   formRef: Ref<FormInstance | undefined>
   loading: Ref<boolean>
   saving: Ref<boolean>
+  backfilling: Ref<boolean>
   loadError: Ref<string>
   canManage: ComputedRef<boolean>
   t: Translate
@@ -77,3 +79,28 @@ export const saveTranscodeProfile = async (context: SettingsContext): Promise<vo
     context.saving.value = false
   }
 }
+
+/** 手动补齐转码：扫一遍缺码率产物/帧图的分集并入队。 */
+export const runTranscodeBackfill = async (context: SettingsContext): Promise<void> => {
+  if (!context.canManage.value || context.backfilling.value) {
+    return
+  }
+  context.backfilling.value = true
+  try {
+    const response = await runTranscodeBackfillApi()
+    if (response.code !== 0) {
+      ElMessage.error(response.message || context.t('transcodeSettings.backfillFailed'))
+      return
+    }
+    const triggered = response.data?.triggered ?? 0
+    if (triggered > 0) {
+      ElMessage.success(context.t('transcodeSettings.backfillDone', { count: triggered }))
+    } else {
+      ElMessage.info(context.t('transcodeSettings.backfillEmpty'))
+    }
+  } catch {
+    ElMessage.error(context.t('transcodeSettings.backfillFailed'))
+  } finally {
+    context.backfilling.value = false
+  }
+}
diff --git a/src/views/systemManagement/composables/useTranscodeSettings.ts b/src/views/systemManagement/composables/useTranscodeSettings.ts
index 31a94d8..aafc395 100644
--- a/src/views/systemManagement/composables/useTranscodeSettings.ts
+++ b/src/views/systemManagement/composables/useTranscodeSettings.ts
@@ -13,7 +13,11 @@ import {
   positiveEvenRule,
   positiveIntegerRule
 } from './transcodeProfileRules'
-import { loadTranscodeProfile, saveTranscodeProfile } from './transcodeSettingsActions'
+import {
+  loadTranscodeProfile,
+  runTranscodeBackfill,
+  saveTranscodeProfile
+} from './transcodeSettingsActions'
 
 /** 转码设置页的响应式状态与动作装配。 */
 export function useTranscodeSettings() {
@@ -22,10 +26,11 @@ export function useTranscodeSettings() {
   const formRef = ref<FormInstance>()
   const loading = ref(false)
   const saving = ref(false)
+  const backfilling = ref(false)
   const loadError = ref('')
   const form = reactive<MediaTranscodeProfile>(defaultProfile())
   const canManage = computed(() => can('episode:upload'))
-  const context = { form, formRef, loading, saving, loadError, canManage, t }
+  const context = { form, formRef, loading, saving, backfilling, loadError, canManage, t }
   const rules = computed(() => createProfileRules(t))
   const enabledRules = computed(() => createEnabledRules(form, t))
   const qualityRules = (index: number) => createQualityRules(form, index, t)
@@ -50,6 +55,7 @@ export function useTranscodeSettings() {
     rules,
     loading,
     saving,
+    backfilling,
     loadError,
     canManage,
     qualityRules,
@@ -59,6 +65,7 @@ export function useTranscodeSettings() {
     loadProfile,
     addRung,
     deleteRung,
-    saveProfile
+    saveProfile,
+    runBackfill: () => runTranscodeBackfill(context)
   }
 }