diff --git a/src/App.vue b/src/App.vue
index 6685f49..8f63bcc 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -1,7 +1,12 @@
 <template>
   <AppLayout>
     <template #header>
-      <AppHeader v-if="quote" :quote="quote" />
+      <AppHeader
+        v-if="quote"
+        :quote="quote"
+        :ws-status="wsStatus"
+        :ws-in-session="wsInSession"
+      />
     </template>
 
     <section class="quote-section">
@@ -64,6 +69,7 @@
 
 <script setup lang="ts">
 import { ref } from 'vue'
+import { storeToRefs } from 'pinia'
 import AppLayout from './layout/AppLayout.vue'
 import AppHeader from './components/header/AppHeader.vue'
 import QuoteStats from './components/quote/QuoteStats.vue'
@@ -79,8 +85,10 @@ import { useQuote } from './composables/useQuote'
 import { useNews } from './composables/useNews'
 import { usePositions } from './composables/usePositions'
 import { useAiAdvice } from './composables/useAiAdvice'
+import { useQuotaStore } from './stores/quota'
 
 const { data: quote, klineLoading, loadKline } = useQuote()
+const { wsStatus, wsInSession } = storeToRefs(useQuotaStore())
 const { data: news, loading: newsLoading, error: newsError, refresh: refreshNews } = useNews()
 const { data: positions } = usePositions()
 const { data: advice, loading: adviceLoading, refresh: refreshAdvice } = useAiAdvice()
diff --git a/src/api/baidu/ws.ts b/src/api/baidu/ws.ts
index 45751e8..74ceeb0 100644
--- a/src/api/baidu/ws.ts
+++ b/src/api/baidu/ws.ts
@@ -16,9 +16,13 @@ function resolveWsUrl(): string {
   return `${proto}//${host}/finance-ws/`
 }
 
+/** UI / store 用的连接状态 */
+export type WsConnectionStatus = 'disconnected' | 'connecting' | 'connected'
+
 export type BaiduQuoteWsHandlers = {
   onMessage: (msg: BaiduWsMessage) => void
   onError?: (err: unknown) => void
+  onStatus?: (status: WsConnectionStatus) => void
 }
 
 function buildItem(): BaiduWsItem {
@@ -41,13 +45,26 @@ export class BaiduQuoteWs {
   private reconnectTimer: ReturnType<typeof setTimeout> | null = null
   private reconnectAttempt = 0
   private intentionalClose = false
+  /** True from connect() until intentional disconnect(); survives transient closes. */
+  private running = false
+  private status: WsConnectionStatus = 'disconnected'
   private handlers: BaiduQuoteWsHandlers
 
   constructor(handlers: BaiduQuoteWsHandlers) {
     this.handlers = handlers
   }
 
+  /** Whether this client should stay connected (including reconnect backoff). */
+  isRunning(): boolean {
+    return this.running
+  }
+
+  getStatus(): WsConnectionStatus {
+    return this.status
+  }
+
   connect(): void {
+    this.running = true
     this.intentionalClose = false
     this.clearReconnect()
     if (
@@ -60,6 +77,7 @@ export class BaiduQuoteWs {
   }
 
   disconnect(): void {
+    this.running = false
     this.intentionalClose = true
     this.clearTimers()
     this.clearReconnect()
@@ -75,11 +93,19 @@ export class BaiduQuoteWs {
       }
       this.ws = null
     }
+    this.setStatus('disconnected')
+  }
+
+  private setStatus(next: WsConnectionStatus): void {
+    if (this.status === next) return
+    this.status = next
+    this.handlers.onStatus?.(next)
   }
 
   private openSocket(): void {
     if (this.intentionalClose) return
 
+    this.setStatus('connecting')
     const ws = new WebSocket(resolveWsUrl())
     this.ws = ws
 
@@ -93,6 +119,7 @@ export class BaiduQuoteWs {
         return
       }
       this.reconnectAttempt = 0
+      this.setStatus('connected')
       this.sendSubscribe()
       this.startTimers()
     }
@@ -115,7 +142,12 @@ export class BaiduQuoteWs {
     ws.onclose = () => {
       this.clearTimers()
       this.ws = null
-      if (!this.intentionalClose) this.scheduleReconnect()
+      if (!this.intentionalClose) {
+        this.setStatus('connecting')
+        this.scheduleReconnect()
+      } else {
+        this.setStatus('disconnected')
+      }
     }
   }
 
diff --git a/src/components/header/AppHeader.vue b/src/components/header/AppHeader.vue
index d8e0a5f..42e5ec9 100644
--- a/src/components/header/AppHeader.vue
+++ b/src/components/header/AppHeader.vue
@@ -5,6 +5,10 @@
       <span class="code">{{ quote.code }}</span>
       <span class="exchange">{{ quote.exchange }}</span>
       <el-tag size="small" type="info" effect="plain">{{ quote.status }}</el-tag>
+      <span class="ws-status" :class="wsStatusClass" :title="wsStatusTitle">
+        <span class="ws-dot" aria-hidden="true" />
+        <span class="ws-label">{{ wsStatusLabel }}</span>
+      </span>
     </div>
     <div class="price-block">
       <span class="last" :class="priceClass">{{ quote.last.toFixed(2) }}</span>
@@ -25,10 +29,13 @@
 import { computed, ref } from 'vue'
 import { Setting } from '@element-plus/icons-vue'
 import type { QuoteData } from '../../types'
+import type { WsConnectionStatus } from '../../api/baidu/ws'
 import SettingsDialog from './SettingsDialog.vue'
 
 const props = defineProps<{
   quote: QuoteData
+  wsStatus: WsConnectionStatus
+  wsInSession: boolean
 }>()
 
 const settingsVisible = ref(false)
@@ -37,6 +44,27 @@ const priceClass = computed(() =>
   props.quote.change >= 0 ? 'price-up' : 'price-down',
 )
 
+const wsStatusLabel = computed(() => {
+  if (!props.wsInSession) return '休市'
+  if (props.wsStatus === 'connected') return '已连接'
+  if (props.wsStatus === 'connecting') return '连接中'
+  return '未连接'
+})
+
+const wsStatusClass = computed(() => {
+  if (!props.wsInSession) return 'is-off'
+  if (props.wsStatus === 'connected') return 'is-on'
+  if (props.wsStatus === 'connecting') return 'is-pending'
+  return 'is-off'
+})
+
+const wsStatusTitle = computed(() => {
+  if (!props.wsInSession) {
+    return '非交易时段（09:00–11:30 / 13:30–15:30 / 21:00–23:00）'
+  }
+  return `WebSocket ${wsStatusLabel.value}`
+})
+
 function formatSigned(n: number) {
   if (n > 0) return `+${Number(n).toFixed(2)}`
   return Number(n).toFixed(2)
@@ -72,6 +100,56 @@ function formatSigned(n: number) {
   font-size: 13px;
 }
 
+.ws-status {
+  display: inline-flex;
+  align-items: center;
+  gap: 5px;
+  margin-left: 4px;
+  padding: 2px 8px;
+  border-radius: 999px;
+  font-size: 12px;
+  line-height: 1.4;
+  background: #f0f2f5;
+  color: var(--text-secondary);
+  user-select: none;
+}
+
+.ws-dot {
+  width: 7px;
+  height: 7px;
+  border-radius: 50%;
+  background: currentColor;
+  flex-shrink: 0;
+}
+
+.ws-status.is-on {
+  color: var(--down);
+  background: color-mix(in srgb, var(--down) 12%, #fff);
+}
+
+.ws-status.is-pending {
+  color: #d48806;
+  background: color-mix(in srgb, #d48806 12%, #fff);
+}
+
+.ws-status.is-pending .ws-dot {
+  animation: ws-pulse 1.2s ease-in-out infinite;
+}
+
+.ws-status.is-off {
+  color: var(--text-secondary);
+}
+
+@keyframes ws-pulse {
+  0%,
+  100% {
+    opacity: 1;
+  }
+  50% {
+    opacity: 0.35;
+  }
+}
+
 .price-block {
   display: flex;
   align-items: baseline;
diff --git a/src/composables/useQuote.ts b/src/composables/useQuote.ts
index 1e91b20..bca9e99 100644
--- a/src/composables/useQuote.ts
+++ b/src/composables/useQuote.ts
@@ -6,7 +6,7 @@ export type { KlinePeriod }
 
 /**
  * 行情 composable：状态统一落在 quota store，便于 AI 分析读取。
- * 页面打开时拉分时/盘口并建立 WebSocket；卸载时断开。
+ * 页面打开时拉分时/盘口；交易时段内自动连 WS（30s 检测），卸载时断开。
  * K 线点击 Tab 再拉。
  */
 export function useQuote() {
diff --git a/src/stores/quota.ts b/src/stores/quota.ts
index df34b21..9939147 100644
--- a/src/stores/quota.ts
+++ b/src/stores/quota.ts
@@ -21,7 +21,9 @@ import {
   extractVariety,
   getPositionQueryDate,
   getPreviousTradingDate,
+  isWsTradingSession,
 } from '../utils/tradingDate'
+import type { WsConnectionStatus } from '../api/baidu/ws'
 
 /** K 线周期（日/周/月） */
 export type KlinePeriod = 'day' | 'week' | 'month'
@@ -111,6 +113,13 @@ export const useQuotaStore = defineStore('quota', () => {
   let quoteWs: BaiduQuoteWs | null = null
   /** When false, fetchQuote must not open WS (page unmounted). */
   let wsDesired = false
+  /** 30s session gate: connect in trading hours, disconnect outside. */
+  let sessionTimer: ReturnType<typeof setInterval> | null = null
+
+  const wsStatus = ref<WsConnectionStatus>('disconnected')
+  const wsInSession = ref(false)
+
+  const SESSION_CHECK_MS = 30_000
 
   function handleWsMessage(msg: BaiduWsMessage) {
     if (msg.resultCode !== '0' || !msg.data) {
@@ -128,18 +137,54 @@ export const useQuotaStore = defineStore('quota', () => {
     }
   }
 
+  function stopSessionWatch() {
+    if (sessionTimer) {
+      clearInterval(sessionTimer)
+      sessionTimer = null
+    }
+  }
+
+  /**
+   * Align WS with trading session:
+   * - in session + not running → connect
+   * - out of session + running → disconnect (keep wsDesired)
+   */
+  function syncWsWithSession() {
+    if (!wsDesired) return
+    const inSession = isWsTradingSession()
+    wsInSession.value = inSession
+    if (inSession) {
+      if (!quoteWs?.isRunning()) connectWs()
+    } else if (quoteWs?.isRunning()) {
+      quoteWs.disconnect()
+      quoteWs = null
+      wsStatus.value = 'disconnected'
+    }
+  }
+
+  function startSessionWatch() {
+    stopSessionWatch()
+    syncWsWithSession()
+    sessionTimer = setInterval(syncWsWithSession, SESSION_CHECK_MS)
+  }
+
   /** Allow WS after HTTP success (call on page mount before fetchQuote). */
   function enableWs() {
     wsDesired = true
+    startSessionWatch()
   }
 
-  /** (Re)connect only while WS is still desired. */
+  /** (Re)connect only while page wants WS and within trading session. */
   function connectWs() {
-    if (!wsDesired) return
+    if (!wsDesired || !isWsTradingSession()) return
+    wsInSession.value = true
     quoteWs?.disconnect()
     quoteWs = new BaiduQuoteWs({
       onMessage: handleWsMessage,
       onError: (e) => console.error('[quota] ws error', e),
+      onStatus: (s) => {
+        wsStatus.value = s
+      },
     })
     quoteWs.connect()
   }
@@ -147,8 +192,11 @@ export const useQuotaStore = defineStore('quota', () => {
   /** Stop WS and clear desire so in-flight fetchQuote cannot reopen it. */
   function disconnectWs() {
     wsDesired = false
+    stopSessionWatch()
     quoteWs?.disconnect()
     quoteWs = null
+    wsStatus.value = 'disconnected'
+    wsInSession.value = false
   }
 
   // ─── 新闻 ───────────────────────────────────────────────
@@ -338,6 +386,8 @@ export const useQuotaStore = defineStore('quota', () => {
     positions,
     positionsLoading,
     positionsError,
+    wsStatus,
+    wsInSession,
     // computed
     hasQuote,
     hasNews,
diff --git a/src/utils/tradingDate.ts b/src/utils/tradingDate.ts
index 6e6cc53..8a4b16c 100644
--- a/src/utils/tradingDate.ts
+++ b/src/utils/tradingDate.ts
@@ -51,6 +51,27 @@ export function extractVariety(contract: string): string {
   return m ? m[1] : contract
 }
 
+/** 分钟数（从 0:00 起） */
+function minutesOfDay(d: Date): number {
+  return d.getHours() * 60 + d.getMinutes()
+}
+
+/**
+ * WebSocket 应保持连接的交易时段（本地时区）：
+ * - 上午 09:00–11:30
+ * - 下午 13:30–15:30
+ * - 夜盘 21:00–23:00
+ * 边界含起止分钟（如 11:30:xx 仍在时段内，11:31 起视为结束）。
+ */
+export function isWsTradingSession(now: Date = new Date()): boolean {
+  const m = minutesOfDay(now)
+  return (
+    (m >= 9 * 60 && m <= 11 * 60 + 30) ||
+    (m >= 13 * 60 + 30 && m <= 15 * 60 + 30) ||
+    (m >= 21 * 60 && m <= 23 * 60)
+  )
+}
+
 /**
  * 最近 N 个月日期区间（含起止日）。
  */