diff --git a/app/pages/me/admin/config/index.vue b/app/pages/me/admin/config/index.vue
index fdc0998..647be0a 100644
--- a/app/pages/me/admin/config/index.vue
+++ b/app/pages/me/admin/config/index.vue
@@ -8,6 +8,8 @@ type GlobalConfigPayload = {
   config: {
     siteName: string
     allowRegister: boolean
+    mediaOrphanAutoSweepEnabled: boolean
+    mediaOrphanAutoSweepIntervalMinutes: number
   }
 }
 
@@ -18,6 +20,8 @@ const loading = ref(true)
 const saving = ref(false)
 const siteName = ref('')
 const allowRegister = ref(true)
+const mediaOrphanAutoSweepEnabled = ref(false)
+const mediaOrphanAutoSweepIntervalMinutes = ref(60)
 
 async function ensureAdmin() {
   await refresh(true)
@@ -33,6 +37,8 @@ async function load() {
     const cfg = unwrapApiBody(res).config
     siteName.value = cfg.siteName
     allowRegister.value = cfg.allowRegister
+    mediaOrphanAutoSweepEnabled.value = cfg.mediaOrphanAutoSweepEnabled
+    mediaOrphanAutoSweepIntervalMinutes.value = cfg.mediaOrphanAutoSweepIntervalMinutes
   } finally {
     loading.value = false
   }
@@ -55,6 +61,8 @@ async function save() {
   try {
     await putKey('siteName', siteName.value.trim())
     await putKey('allowRegister', allowRegister.value)
+    await putKey('mediaOrphanAutoSweepEnabled', mediaOrphanAutoSweepEnabled.value)
+    await putKey('mediaOrphanAutoSweepIntervalMinutes', mediaOrphanAutoSweepIntervalMinutes.value)
     await load()
     await refreshGlobalConfig()
   } finally {
@@ -69,7 +77,7 @@ async function save() {
       应用配置
     </h1>
     <p class="text-sm text-muted">
-      全局设置：站点名称与开放注册。
+      全局设置：站点名称、开放注册与媒体孤儿自动清扫。
     </p>
 
     <UCard>
@@ -89,6 +97,24 @@ async function save() {
         >
           <UCheckbox v-model="allowRegister" label="开启" />
         </UFormField>
+        <UFormField
+          label="媒体孤儿自动清扫"
+          description="全站生效、仅删除已过宽限期且无引用的图片、建议先在「图片孤儿审查」确认。"
+        >
+          <UCheckbox v-model="mediaOrphanAutoSweepEnabled" label="开启定时自动清扫" />
+        </UFormField>
+        <UFormField
+          label="清扫间隔（分钟）"
+          description="15–1440；与定时任务触发频率配合，任务内会按此间隔节流。"
+        >
+          <UInput
+            v-model.number="mediaOrphanAutoSweepIntervalMinutes"
+            type="number"
+            :min="15"
+            :max="1440"
+            step="1"
+          />
+        </UFormField>
         <UButton :loading="saving" @click="save">
           保存
         </UButton>
diff --git a/server/service/config/registry.ts b/server/service/config/registry.ts
index 0f43458..a0314fb 100644
--- a/server/service/config/registry.ts
+++ b/server/service/config/registry.ts
@@ -31,6 +31,21 @@ const CONFIG_REGISTRY = {
     defaultValue: true,
     userOverridable: false,
   }),
+  mediaOrphanAutoSweepEnabled: defineConfig<boolean>({
+    key: "mediaOrphanAutoSweepEnabled",
+    scope: "global",
+    valueType: "boolean",
+    defaultValue: false,
+    userOverridable: false,
+  }),
+  mediaOrphanAutoSweepIntervalMinutes: defineConfig<number>({
+    key: "mediaOrphanAutoSweepIntervalMinutes",
+    scope: "global",
+    valueType: "number",
+    defaultValue: 60,
+    userOverridable: false,
+    validate: (value: number) => Number.isInteger(value) && value >= 15 && value <= 1440,
+  }),
   theme: defineConfig<string>({
     key: "theme",
     scope: "both",