diff --git a/src/utils/exportActivityListXlsx.ts b/src/utils/exportActivityListXlsx.ts
index 1529162..346cbca 100644
--- a/src/utils/exportActivityListXlsx.ts
+++ b/src/utils/exportActivityListXlsx.ts
@@ -33,6 +33,12 @@ function stripHtml(html: unknown, max = 12000): string {
     .replace(/<script[\s\S]*?<\/script>/gi, '')
     .replace(/<style[\s\S]*?<\/style>/gi, '')
     .replace(/<[^>]+>/g, ' ')
+    .replace(/&nbsp;/gi, ' ')
+    .replace(/&amp;/gi, '&')
+    .replace(/&lt;/gi, '<')
+    .replace(/&gt;/gi, '>')
+    .replace(/&quot;/gi, '"')
+    .replace(/&#39;/g, "'")
     .replace(/\s+/g, ' ')
     .trim()
     .slice(0, max)
@@ -108,8 +114,16 @@ const BASE_COL_SPEC: { zh: string; format: (row: Record<string, unknown>) => str
   { zh: '审核状态', format: (r) => auditStatusLabel(r.audit_status) },
   { zh: '上架', format: (r) => yn(r.is_active) },
   { zh: '热门', format: (r) => yn(r.is_hot) },
-  { zh: '开始日期', format: (r) => ymdFromDateValue(r.start_at as string | null | undefined) },
-  { zh: '结束日期', format: (r) => ymdFromDateValue(r.end_at as string | null | undefined) },
+  {
+    zh: '活动时间',
+    format: (r) => {
+      const s = ymdFromDateValue(r.start_at as string | null | undefined)
+      const e = ymdFromDateValue(r.end_at as string | null | undefined)
+      if (!s && !e) return ''
+      if (s && e) return s === e ? s : `${s} 至 ${e}`
+      return s || e
+    },
+  },
   { zh: '联系人', format: (r) => str(r.contact_name) },
   { zh: '联系电话', format: (r) => str(r.contact_phone) },
   { zh: '详情正文', format: (r) => stripHtml(r.detail_html) },
diff --git a/src/views/activities/ActivityList.vue b/src/views/activities/ActivityList.vue
index 186ede4..921cba5 100644
--- a/src/views/activities/ActivityList.vue
+++ b/src/views/activities/ActivityList.vue
@@ -136,6 +136,8 @@ const filters = reactive({
   is_active: undefined as '1' | '0' | undefined,
   schedule_status: undefined as 'not_started' | 'ongoing' | 'ended' | undefined,
   audit_status: undefined as 'approved' | 'pending' | 'rejected' | undefined,
+  /** 活动开始日期区间 [start, end] YYYY-MM-DD */
+  dateRange: undefined as string[] | undefined,
 })
 
 const exportActivitiesLoading = ref(false)
@@ -150,6 +152,8 @@ function buildActivitiesListParams(page: number, pageSize: number) {
     is_active: filters.is_active,
     schedule_status: filters.schedule_status,
     audit_status: filters.audit_status,
+    start_date: filters.dateRange?.[0] || undefined,
+    end_date: filters.dateRange?.[1] || undefined,
   }
 }
 
@@ -163,7 +167,8 @@ async function exportActivitiesXlsx() {
     let total = Infinity
     while (all.length < total) {
       const { data } = await http.get('/activities', {
-        params: buildActivitiesListParams(page, pageSize),
+        // for_export：带回 detail_html / 媒体等列表接口默认剔除的字段
+        params: { ...buildActivitiesListParams(page, pageSize), for_export: 1 },
       })
       const chunk = (data?.data ?? []) as Record<string, unknown>[]
       total = Number(data?.total ?? 0)
@@ -2138,6 +2143,13 @@ async function removeActivity(row: Activity) {
         <a-option value="pending">待审核</a-option>
         <a-option value="rejected">已退回</a-option>
       </a-select>
+      <a-range-picker
+        v-model="filters.dateRange"
+        allow-clear
+        value-format="YYYY-MM-DD"
+        :placeholder="['活动时间起', '活动时间止']"
+        style="width: 280px"
+      />
       <a-button type="primary" @click="onSearch">查询</a-button>
       <a-button type="primary" @click="openCreate">新增活动</a-button>
       <a-button :loading="exportActivitiesLoading" @click="exportActivitiesXlsx">导出</a-button>