diff --git a/web/src/views/backend/game/live/index.vue b/web/src/views/backend/game/live/index.vue
index e5628ff..f9f1f15 100644
--- a/web/src/views/backend/game/live/index.vue
+++ b/web/src/views/backend/game/live/index.vue
@@ -283,9 +283,16 @@ let snapshotLoadPromise: Promise<void> | null = null
 const wsLoading = ref(false)
 const wsReady = ref(false)
 const wsConnected = ref(false)
+/** 同一期只提示一次“中大奖”，避免 bet.win/jackpot.hit 连续触发刷屏 */
+const lastJackpotTipPeriodNo = ref<string>('')
+const lastJackpotTipAtMs = ref<number>(0)
 const wsUrl = ref('')
 const wsTopics = ref<string[]>([])
 const wsClient = ref<WebSocket | null>(null)
+let wsReconnectTimer: number | null = null
+let wsReconnectAttempt = 0
+let wsLastConfigReloadAtMs = 0
+let wsManualClosing = false
 const isMobile = ref(false)
 const candidateSort = ref<{ prop: string; order: 'ascending' | 'descending' | null }>({ prop: 'estimated_loss', order: 'ascending' })
 
@@ -376,7 +383,7 @@ function handleWsPayload(raw: unknown): void {
     if (event === 'bet.win' && parsed.data && typeof parsed.data === 'object') {
         const winData = parsed.data as anyObj
         if (winData.is_jackpot === true) {
-            ElMessage.success(t('game.live.jackpot_hit_tip'))
+            showJackpotTipOnce(readString(winData.period_no) || readString(snapshot.record?.period_no))
         }
         return
     }
@@ -384,7 +391,7 @@ function handleWsPayload(raw: unknown): void {
         const jackpotData = parsed.data as anyObj
         const hits = Array.isArray(jackpotData.hits) ? jackpotData.hits : []
         if (hits.length > 0) {
-            ElMessage.success(t('game.live.jackpot_hit_tip'))
+            showJackpotTipOnce(readString(jackpotData.period_no) || readString(snapshot.record?.period_no))
         }
         return
     }
@@ -397,6 +404,27 @@ function handleWsPayload(raw: unknown): void {
     }
 }
 
+function readString(v: any): string {
+    return typeof v === 'string' ? v : ''
+}
+
+function showJackpotTipOnce(periodNo: string): void {
+    const key = String(periodNo || '')
+    const now = Date.now()
+    // 同一期只提示一次；同时加 2s 防抖，避免同一瞬间 bet.win + jackpot.hit 连续触发刷屏
+    if (key !== '' && lastJackpotTipPeriodNo.value === key) {
+        return
+    }
+    if (now - lastJackpotTipAtMs.value < 2000) {
+        return
+    }
+    if (key !== '') {
+        lastJackpotTipPeriodNo.value = key
+    }
+    lastJackpotTipAtMs.value = now
+    ElMessage.success(t('game.live.jackpot_hit_tip'))
+}
+
 /** 用 period.tick 轻量字段刷新倒计时（不触发 HTTP，避免与 WS 每秒 snapshot 冲突） */
 function mergePeriodTickFields(periodData: anyObj): void {
     if (typeof periodData.server_time === 'number') {
@@ -445,11 +473,17 @@ function connectWs(): void {
     if (!wsReady.value || !wsUrl.value) {
         return
     }
+    if (wsReconnectTimer !== null) {
+        window.clearTimeout(wsReconnectTimer)
+        wsReconnectTimer = null
+    }
+    wsManualClosing = false
     disconnectWs()
     const socket = new WebSocket(wsUrl.value)
     wsClient.value = socket
     socket.onopen = () => {
         wsConnected.value = true
+        wsReconnectAttempt = 0
         const topics = wsTopics.value
         const payload = JSON.stringify({ action: 'subscribe', topics })
         socket.send(payload)
@@ -463,24 +497,42 @@ function connectWs(): void {
     socket.onclose = () => {
         wsConnected.value = false
         wsClient.value = null
+        if (wsManualClosing) {
+            return
+        }
         // 断线后：先刷新 wsConfig 拿新的 admin_ws_token（避免握手 token 已过期反复失败），再重连
-        window.setTimeout(async () => {
+        const attempt = wsReconnectAttempt
+        wsReconnectAttempt = Math.min(wsReconnectAttempt + 1, 10)
+        const baseDelay = Math.min(30_000, 1200 * Math.pow(2, attempt))
+        const delay = Math.max(1200, Math.floor(baseDelay + Math.random() * 400))
+        wsReconnectTimer = window.setTimeout(async () => {
+            wsReconnectTimer = null
             if (wsConnected.value) {
                 return
             }
             try {
-                await reloadWsConfig()
+                const now = Date.now()
+                // 避免断线风暴下疯狂请求 wsConfig（后台会报错且浏览器控制台刷屏）
+                if (!wsLoading.value && now - wsLastConfigReloadAtMs > 8000) {
+                    wsLastConfigReloadAtMs = now
+                    await reloadWsConfig()
+                }
             } catch {
                 /* ignore；下次重连时再试 */
             }
             if (!wsConnected.value) {
                 connectWs()
             }
-        }, 1200)
+        }, delay)
     }
 }
 
 function disconnectWs(): void {
+    wsManualClosing = true
+    if (wsReconnectTimer !== null) {
+        window.clearTimeout(wsReconnectTimer)
+        wsReconnectTimer = null
+    }
     if (wsClient.value) {
         wsClient.value.close()
         wsClient.value = null