diff --git a/src/App.vue b/src/App.vue
index d2acd5f..855804f 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -41,13 +41,14 @@
 <script setup>
 import { computed, ref } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
-import { ArrowLeftBold, ArrowRightBold, Histogram, TrendCharts } from '@element-plus/icons-vue'
+import { ArrowLeftBold, ArrowRightBold, Download, Histogram, TrendCharts } from '@element-plus/icons-vue'
 import { fetchTradeCalendar } from '@/composables/useTradeCalendar'
 
 const route = useRoute()
 const router = useRouter()
 const isSidebarCollapsed = ref(false)
 const iconMap = {
+  Download,
   Histogram,
   TrendCharts
 }
diff --git a/src/api/stock.js b/src/api/stock.js
index 95bf6e1..19006cf 100644
--- a/src/api/stock.js
+++ b/src/api/stock.js
@@ -24,6 +24,24 @@ export function getLimitBoardOpenLowerGroups(params) {
   })
 }
 
+export function getLimitBoardOpenThresholdGroups(params) {
+  return request({
+    url: '/limit-board/open-threshold-groups',
+    method: 'get',
+    params
+  })
+}
+
+export function downloadSecondBoardProfitCsv(params) {
+  return request({
+    url: '/download/limit-board/second-board-profit-csv',
+    method: 'get',
+    params,
+    responseType: 'blob',
+    timeout: 60000
+  })
+}
+
 // 新增：获取历史K线
 export function getKlineData(code) {
   return request({
diff --git a/src/router/index.js b/src/router/index.js
index 2ff006c..4b40eb4 100644
--- a/src/router/index.js
+++ b/src/router/index.js
@@ -16,6 +16,12 @@ const routes = [
     name: 'StockLimitBoard',
     component: () => import('@/views/stock/LimitBoard.vue'),
     meta: { title: '涨停连板概览', icon: 'Histogram' }
+  },
+  {
+    path: '/stock/download',
+    name: 'StockDownload',
+    component: () => import('@/views/stock/Download.vue'),
+    meta: { title: '下载', icon: 'Download' }
   }
 ]
 
diff --git a/src/views/stock/Analyze.vue b/src/views/stock/Analyze.vue
index 4ae889b..82a8d75 100644
--- a/src/views/stock/Analyze.vue
+++ b/src/views/stock/Analyze.vue
@@ -328,7 +328,7 @@ const openKlineDialog = async (row) => {
       xAxis: { type: 'category', data: dates, scale: true, boundaryGap: false },
       yAxis: { scale: true, splitArea: { show: true } },
       dataZoom: [
-        { type: 'inside', start: 80, end: 100 },
+        { type: 'inside', start: 95, end: 100 },
         { show: true, type: 'slider', top: '92%' }
       ],
       series: [{
diff --git a/src/views/stock/Download.vue b/src/views/stock/Download.vue
new file mode 100644
index 0000000..bd91ddd
--- /dev/null
+++ b/src/views/stock/Download.vue
@@ -0,0 +1,315 @@
+<template>
+  <div class="download-page">
+    <section class="download-toolbar">
+      <div class="toolbar-copy">
+        <h1>数据下载</h1>
+        <p>按交易日期范围下载策略明细 CSV。</p>
+      </div>
+    </section>
+
+    <section class="download-panel">
+      <div class="panel-head">
+        <div>
+          <h2>二板早盘次日盈利</h2>
+          <p>下载符合二板早盘开盘阈值条件的股票明细，并查看后一交易日盈利情况。</p>
+        </div>
+      </div>
+
+      <el-form :inline="true" class="download-form">
+        <el-form-item label="起始日期">
+          <el-date-picker
+            v-model="startDate"
+            type="date"
+            value-format="YYYY-MM-DD"
+            :disabled-date="disableDates"
+            :editable="false"
+            placeholder="选择起始日期"
+            class="date-input"
+          />
+        </el-form-item>
+        <el-form-item label="结束日期">
+          <el-date-picker
+            v-model="endDate"
+            type="date"
+            value-format="YYYY-MM-DD"
+            :disabled-date="disableDates"
+            :editable="false"
+            placeholder="选择结束日期"
+            class="date-input"
+          />
+        </el-form-item>
+        <el-form-item>
+          <el-button
+            type="primary"
+            :icon="DownloadIcon"
+            :loading="downloading"
+            :disabled="!canDownload"
+            @click="handleDownload"
+          >
+            下载 CSV
+          </el-button>
+        </el-form-item>
+      </el-form>
+
+      <div class="rule-grid">
+        <div class="rule-item">
+          <span class="rule-label">开盘条件</span>
+          <strong>低于前收 101%</strong>
+        </div>
+        <div class="rule-item">
+          <span class="rule-label">涨停时间</span>
+          <strong>早于 11:00</strong>
+        </div>
+        <div class="rule-item">
+          <span class="rule-label">盈利口径</span>
+          <strong>T 日收盘买入</strong>
+        </div>
+      </div>
+    </section>
+  </div>
+</template>
+
+<script setup>
+import { computed, onMounted, ref } from 'vue'
+import dayjs from 'dayjs'
+import { ElMessage } from 'element-plus'
+import { Download as DownloadIcon } from '@element-plus/icons-vue'
+import { fetchTradeCalendar } from '@/composables/useTradeCalendar'
+import { downloadSecondBoardProfitCsv } from '@/api/stock'
+
+const DEFAULT_START_DATE = '2026-01-01'
+
+const startDate = ref(DEFAULT_START_DATE)
+const endDate = ref('')
+const downloading = ref(false)
+const openDatesSet = ref(new Set())
+const maxTradeDate = ref('')
+
+const canDownload = computed(
+  () => Boolean(startDate.value && endDate.value) && startDate.value <= endDate.value
+)
+
+onMounted(async () => {
+  try {
+    const res = await fetchTradeCalendar()
+    const { open_dates: openDates = [], max_date: maxDate = '' } = res || {}
+
+    openDatesSet.value = new Set(openDates)
+    maxTradeDate.value = maxDate
+    endDate.value = maxDate
+    startDate.value = getDefaultStartDate(openDates)
+  } catch (err) {
+    console.error('初始化下载页失败', err)
+  }
+})
+
+const clampToMaxDate = (date) => {
+  if (!date || !maxTradeDate.value || date <= maxTradeDate.value) return date
+  return maxTradeDate.value
+}
+
+const getDefaultStartDate = (openDates) => {
+  const fallbackDate = clampToMaxDate(DEFAULT_START_DATE)
+  const sortedOpenDates = [...openDates].sort()
+  const validOpenDates = sortedOpenDates.filter(
+    (date) => !maxTradeDate.value || date <= maxTradeDate.value
+  )
+
+  if (!validOpenDates.length || openDatesSet.value.has(fallbackDate)) return fallbackDate
+
+  return (
+    validOpenDates.find((date) => date >= fallbackDate) ||
+    validOpenDates[validOpenDates.length - 1] ||
+    fallbackDate
+  )
+}
+
+const disableDates = (time) => {
+  const date = dayjs(time).format('YYYY-MM-DD')
+  if (maxTradeDate.value && date > maxTradeDate.value) return true
+  return openDatesSet.value.size > 0 ? !openDatesSet.value.has(date) : false
+}
+
+const handleDownload = async () => {
+  if (!startDate.value || !endDate.value) {
+    ElMessage.warning('请选择下载日期范围')
+    return
+  }
+
+  if (endDate.value < startDate.value) {
+    ElMessage.warning('结束日期不能早于起始日期')
+    return
+  }
+
+  downloading.value = true
+  try {
+    const blob = await downloadSecondBoardProfitCsv({
+      start_date: startDate.value,
+      end_date: endDate.value
+    })
+    saveBlob(blob, getDownloadFilename())
+    ElMessage.success('CSV 下载已开始')
+  } catch (err) {
+    console.error('下载二板早盘次日盈利 CSV 失败', err)
+  } finally {
+    downloading.value = false
+  }
+}
+
+const saveBlob = (blob, filename) => {
+  const url = window.URL.createObjectURL(blob)
+  const link = document.createElement('a')
+
+  link.href = url
+  link.download = filename
+  document.body.appendChild(link)
+  link.click()
+  document.body.removeChild(link)
+  window.URL.revokeObjectURL(url)
+}
+
+const getDownloadFilename = () => {
+  const start = startDate.value.replaceAll('-', '')
+  const end = endDate.value.replaceAll('-', '')
+  return `limit_second_board_profit_${start}_${end}_daily_detail.csv`
+}
+</script>
+
+<style scoped>
+.download-page {
+  min-height: 100vh;
+  padding: 20px;
+  box-sizing: border-box;
+  background: #f4f7f9;
+}
+
+.download-toolbar,
+.download-panel {
+  background: #fff;
+  border: 1px solid #e5edf5;
+  border-radius: 12px;
+  box-shadow: 0 8px 22px rgba(31, 42, 55, 0.04);
+}
+
+.download-toolbar {
+  padding: 24px;
+  margin-bottom: 16px;
+}
+
+.toolbar-copy h1 {
+  margin: 0 0 8px;
+  font-size: 28px;
+  line-height: 36px;
+  font-weight: 700;
+  letter-spacing: 0;
+  color: #1f2a37;
+}
+
+.toolbar-copy p,
+.panel-head p {
+  color: #667085;
+  font-size: 14px;
+  line-height: 22px;
+}
+
+.download-panel {
+  padding: 22px 24px 24px;
+}
+
+.panel-head {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 16px;
+  margin-bottom: 18px;
+}
+
+.panel-head h2 {
+  margin: 0 0 6px;
+  font-size: 20px;
+  line-height: 28px;
+  font-weight: 700;
+  letter-spacing: 0;
+  color: #1f2a37;
+}
+
+.download-form {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 10px 6px;
+  align-items: flex-end;
+  margin-bottom: 18px;
+}
+
+.date-input {
+  width: 156px;
+}
+
+.rule-grid {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  gap: 12px;
+}
+
+.rule-item {
+  min-height: 76px;
+  padding: 14px;
+  box-sizing: border-box;
+  border: 1px solid #e8eef5;
+  border-radius: 8px;
+  background: #f8fbff;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  gap: 6px;
+}
+
+.rule-label {
+  color: #7c8aa5;
+  font-size: 12px;
+  line-height: 18px;
+}
+
+.rule-item strong {
+  color: #1f2a37;
+  font-size: 16px;
+  line-height: 22px;
+}
+
+:deep(.el-form-item) {
+  margin-bottom: 0;
+}
+
+:deep(.el-input__wrapper),
+:deep(.el-input__inner) {
+  cursor: pointer;
+}
+
+@media (max-width: 820px) {
+  .download-page {
+    padding: 12px;
+  }
+
+  .download-toolbar,
+  .download-panel {
+    padding: 16px;
+  }
+
+  .toolbar-copy h1 {
+    font-size: 24px;
+    line-height: 32px;
+  }
+
+  .download-form,
+  :deep(.download-form .el-form-item),
+  :deep(.download-form .el-form-item__content),
+  .date-input,
+  :deep(.download-form .el-button) {
+    width: 100%;
+  }
+
+  .rule-grid {
+    grid-template-columns: 1fr;
+  }
+}
+</style>
diff --git a/src/views/stock/LimitBoard.vue b/src/views/stock/LimitBoard.vue
index bd25d2b..04ac5f7 100644
--- a/src/views/stock/LimitBoard.vue
+++ b/src/views/stock/LimitBoard.vue
@@ -90,6 +90,7 @@
         <el-tab-pane label="按板数" name="board" />
         <el-tab-pane label="按板块" name="sector" />
         <el-tab-pane :label="openLowerTabLabel" name="openLower" />
+        <el-tab-pane label="连板一下" name="openThreshold" />
       </el-tabs>
 
       <div v-if="displayDetailGroups.length" class="group-list">
@@ -147,6 +148,14 @@
                 <span>开盘 {{ formatPrice(stock.open) }}</span>
                 <span>前收 {{ formatPrice(stock.previous_close) }}</span>
               </div>
+              <div
+                v-if="activeDetailTab === 'openThreshold'"
+                class="stock-open-threshold"
+              >
+                <span>开盘 {{ formatPrice(stock.open) }}</span>
+                <span>前收 {{ formatPrice(stock.previous_close) }}</span>
+                <span>阈值 {{ formatPrice(stock.open_threshold_price) }}</span>
+              </div>
             </button>
           </div>
         </article>
@@ -180,6 +189,7 @@ import { fetchTradeCalendar } from "@/composables/useTradeCalendar";
 import {
   getKlineData,
   getLimitBoardOpenLowerGroups,
+  getLimitBoardOpenThresholdGroups,
   getLimitBoardOverview,
 } from "@/api/stock";
 
@@ -220,6 +230,17 @@ const openLowerDetail = ref({
   },
   groups: [],
 });
+const openThresholdDetail = ref({
+  trade_date: "",
+  previous_trade_date: "",
+  summary: {
+    limit_count: 0,
+    open_within_threshold_count: 0,
+    open_at_or_above_threshold_count: 0,
+    threshold_ratio: 1.01,
+  },
+  groups: [],
+});
 
 const dialogVisible = ref(false);
 const dialogTitle = ref("");
@@ -292,6 +313,8 @@ const displayDetailGroups = computed(() => {
   if (activeDetailTab.value === "sector") return sectorDetailGroups.value;
   if (activeDetailTab.value === "openLower")
     return openLowerDisplayGroups.value;
+  if (activeDetailTab.value === "openThreshold")
+    return openThresholdDetail.value.groups;
   return detailGroups.value.map((group) => ({
     ...group,
     key: `board-${group.board_count ?? group.label}`,
@@ -313,6 +336,7 @@ const detailModeDescription = computed(
       board: "按连板高度从高到低展示当日涨停股票。",
       sector: "按所属行业或板块汇总展示当日涨停股票。",
       openLower: `仅统计当日涨停且前一交易日也涨停的股票，首二一一红色优先，首板进二板黄色随后，前一交易日 ${openLowerDetail.value.previous_trade_date || "--"}。`,
+      openThreshold: `仅统计当日涨停且前一交易日也涨停的股票，并按开盘价是否低于前收 101% 分组，前一交易日 ${openThresholdDetail.value.previous_trade_date || "--"}。`,
     })[activeDetailTab.value],
 );
 const openLowerTabLabel = computed(() => {
@@ -379,9 +403,14 @@ const disableDates = (time) => {
 };
 
 const fetchOverviewPage = async (tradeDate) => {
-  const [currentOverview, currentOpenLowerGroups] = await Promise.all([
+  const [
+    currentOverview,
+    currentOpenLowerGroups,
+    currentOpenThresholdGroups,
+  ] = await Promise.all([
     getLimitBoardOverview({ trade_date: tradeDate }),
     getLimitBoardOpenLowerGroups({ trade_date: tradeDate }),
+    getLimitBoardOpenThresholdGroups({ trade_date: tradeDate }),
   ]);
 
   overview.value = normalizeOverview(currentOverview, tradeDate);
@@ -389,6 +418,10 @@ const fetchOverviewPage = async (tradeDate) => {
     currentOpenLowerGroups,
     tradeDate,
   );
+  openThresholdDetail.value = normalizeOpenThresholdGroups(
+    currentOpenThresholdGroups,
+    tradeDate,
+  );
   strengthSeries.value = overview.value.recent_max_board_stats;
   detailTradeDate.value = overview.value.trade_date;
   detailGroups.value = overview.value.groups;
@@ -402,10 +435,12 @@ const fetchDetailGroups = async (tradeDate) => {
 
   detailLoading.value = true;
   try {
-    const [detailOverview, detailOpenLowerGroups] = await Promise.all([
-      getLimitBoardOverview({ trade_date: tradeDate }),
-      getLimitBoardOpenLowerGroups({ trade_date: tradeDate }),
-    ]);
+    const [detailOverview, detailOpenLowerGroups, detailOpenThresholdGroups] =
+      await Promise.all([
+        getLimitBoardOverview({ trade_date: tradeDate }),
+        getLimitBoardOpenLowerGroups({ trade_date: tradeDate }),
+        getLimitBoardOpenThresholdGroups({ trade_date: tradeDate }),
+      ]);
     const normalized = normalizeOverview(detailOverview, tradeDate);
     detailTradeDate.value = normalized.trade_date;
     detailGroups.value = normalized.groups;
@@ -413,6 +448,10 @@ const fetchDetailGroups = async (tradeDate) => {
       detailOpenLowerGroups,
       tradeDate,
     );
+    openThresholdDetail.value = normalizeOpenThresholdGroups(
+      detailOpenThresholdGroups,
+      tradeDate,
+    );
   } catch (err) {
     console.error("刷新涨停分组明细失败", err);
   } finally {
@@ -461,6 +500,28 @@ const normalizeOpenLowerGroups = (data, fallbackTradeDate = "") => ({
     : [],
 });
 
+const normalizeOpenThresholdGroups = (data, fallbackTradeDate = "") => ({
+  trade_date: data?.trade_date || fallbackTradeDate,
+  previous_trade_date: data?.previous_trade_date || "",
+  summary: {
+    limit_count: data?.summary?.limit_count || 0,
+    open_within_threshold_count:
+      data?.summary?.open_within_threshold_count || 0,
+    open_at_or_above_threshold_count:
+      data?.summary?.open_at_or_above_threshold_count || 0,
+    threshold_ratio: Number(data?.summary?.threshold_ratio || 1.01),
+  },
+  groups: Array.isArray(data?.groups)
+    ? data.groups.map((group) => ({
+        key: `open-threshold-${group?.key || group?.label || "group"}`,
+        rawKey: group?.key || "",
+        label: group?.label || "--",
+        count: Number(group?.count || 0),
+        stocks: Array.isArray(group?.stocks) ? group.stocks : [],
+      }))
+    : [],
+});
+
 const handleQuery = async () => {
   if (!selectedDate.value) return;
 
@@ -815,7 +876,7 @@ const openKlineDialog = async (stock) => {
         },
       ],
       dataZoom: [
-        { type: "inside", xAxisIndex: [0, 1], start: 80, end: 100 },
+        { type: "inside", xAxisIndex: [0, 1], start: 95, end: 100 },
         { show: true, type: "slider", xAxisIndex: [0, 1], top: "90%" },
       ],
       series: [
@@ -1152,7 +1213,8 @@ const openKlineDialog = async (stock) => {
 .stock-meta,
 .stock-metrics,
 .stock-limit-time,
-.stock-open-compare {
+.stock-open-compare,
+.stock-open-threshold {
   color: #607289;
   font-size: 13px;
 }
@@ -1166,7 +1228,8 @@ const openKlineDialog = async (stock) => {
 }
 
 .stock-limit-time,
-.stock-open-compare {
+.stock-open-compare,
+.stock-open-threshold {
   display: flex;
   align-items: center;
   justify-content: space-between;
@@ -1181,7 +1244,8 @@ const openKlineDialog = async (stock) => {
   color: #7a8aa1;
 }
 
-.stock-open-compare span {
+.stock-open-compare span,
+.stock-open-threshold span {
   color: #526982;
   font-weight: 600;
 }