diff --git a/web-ui/src/components/BoardDialog.vue b/web-ui/src/components/BoardDialog.vue
index 1836987..84f816f 100644
--- a/web-ui/src/components/BoardDialog.vue
+++ b/web-ui/src/components/BoardDialog.vue
@@ -74,7 +74,11 @@ async function loadMinute() {
 async function loadDaily() {
   dailyError.value = ''
   try {
-    const bars = await fetchBars('SH', props.code, 'DAY', undefined, undefined)
+    // 日K只展示最近 250 根：取近 2 年（/bars 单页 800 根即可覆盖，避免全历史分页）；
+    // 长期停牌取不到再退回全历史。
+    const since = new Date(Date.now() - 2 * 365 * 86400_000).toISOString().slice(0, 10)
+    let bars = await fetchBars('SH', props.code, 'DAY', since, undefined)
+    if (bars.length === 0) bars = await fetchBars('SH', props.code, 'DAY', undefined, undefined)
     if (bars.length === 0) throw new Error('该板块无日K数据')
     dailyBars.value = bars.slice(-250)
   } catch (e) {
diff --git a/web-ui/src/components/StockDialog.vue b/web-ui/src/components/StockDialog.vue
index 622d74c..fb2d796 100644
--- a/web-ui/src/components/StockDialog.vue
+++ b/web-ui/src/components/StockDialog.vue
@@ -106,7 +106,11 @@ watch(minuteDays, loadMinute)
 async function loadDaily() {
   dailyError.value = ''
   try {
-    let bars = await fetchBars(props.market, props.code, 'DAY', undefined, undefined)
+    // 日K只展示最近 250 根：取近 2 年（/bars 单页 800 根即可覆盖，避免全历史
+    // 分页 5+ 页 + 深层 QFQ 负价重算）；长期停牌取不到再退回全历史。
+    const since = new Date(Date.now() - 2 * 365 * 86400_000).toISOString().slice(0, 10)
+    let bars = await fetchBars(props.market, props.code, 'DAY', since, undefined)
+    if (bars.length === 0) bars = await fetchBars(props.market, props.code, 'DAY', undefined, undefined)
     // 指数（或 /bars 空数据的服务器）回退指数接口
     if (bars.length === 0) bars = await fetchIndexBars(props.market, props.code, 250)
     if (bars.length === 0) throw new Error('无日K数据（可能为新股或代码有误）')