From 3729b2de1e946fede1d72344cbd836dbe0d2a3fc Mon Sep 17 00:00:00 2001
From: aaron <>
Date: Wed, 25 Feb 2026 23:28:04 +0800
Subject: [PATCH] update

---
 backend/app/config.py                         |   3 +
 backend/app/services/bitget_websocket.py      | 433 ++++++++++++++++++
 backend/app/services/price_monitor_service.py | 204 +++++++--
 backend/requirements.txt                      |   1 +
 backend/test_websocket.py                     | 205 +++++++++
 5 files changed, 808 insertions(+), 38 deletions(-)
 create mode 100644 backend/app/services/bitget_websocket.py
 create mode 100644 backend/test_websocket.py

diff --git a/backend/app/config.py b/backend/app/config.py
index 9d1faaf..806f05c 100644
--- a/backend/app/config.py
+++ b/backend/app/config.py
@@ -109,6 +109,9 @@ class Settings(BaseSettings):
     crypto_analysis_interval: int = 60  # 分析间隔（秒）
     crypto_llm_threshold: float = 0.70  # 触发 LLM 分析的置信度阈值
 
+    # 价格监控模式配置
+    use_bitget_websocket: bool = True  # 是否使用 Bitget WebSocket 实时价格（默认 False 使用 Binance 轮询）
+
     # 波动率过滤配置（节省 LLM 调用）
     crypto_volatility_filter_enabled: bool = True  # 是否启用波动率过滤
     crypto_min_volatility_percent: float = 0.5  # 最小波动率（百分比），低于此值跳过分析
diff --git a/backend/app/services/bitget_websocket.py b/backend/app/services/bitget_websocket.py
new file mode 100644
index 0000000..16e0bdc
--- /dev/null
+++ b/backend/app/services/bitget_websocket.py
@@ -0,0 +1,433 @@
+"""
+Bitget WebSocket 实时价格服务
+通过 WebSocket 订阅实时 ticker 价格更新
+"""
+import asyncio
+import json
+import logging
+from typing import Dict, Callable, Optional, Set, Any
+from datetime import datetime
+
+try:
+    import websockets
+    WEBSOCKETS_AVAILABLE = True
+except ImportError:
+    WEBSOCKETS_AVAILABLE = False
+
+from app.utils.logger import logger
+
+
+class BitgetWebSocketClient:
+    """
+    Bitget WebSocket 客户端 - 实时价格订阅
+
+    使用异步 WebSocket 连接获取实时价格更新
+    """
+
+    # Bitget WebSocket v2 端点
+    WS_URL = "wss://ws.bitget.com/v2/ws/public"  # 公共频道 v2
+
+    # 心跳间隔（秒）
+    HEARTBEAT_INTERVAL = 25
+
+    # 重连间隔（秒）
+    RECONNECT_INTERVAL = 5
+
+    # 订阅限制：每个连接最多订阅 50 个交易对
+    MAX_SUBSCRIPTIONS = 50
+
+    def __init__(self):
+        """初始化 WebSocket 客户端"""
+        if not WEBSOCKETS_AVAILABLE:
+            raise ImportError("需要安装 websockets 库: pip install websockets")
+
+        self._ws: Optional[websockets.WebSocketClientProtocol] = None
+        self._running = False
+        self._subscribed_symbols: Set[str] = set()
+
+        # 价格缓存
+        self._prices: Dict[str, float] = {}
+
+        # 回调函数
+        self._callbacks: Dict[str, Set[Callable]] = {}
+
+        # 心跳任务
+        self._heartbeat_task: Optional[asyncio.Task] = None
+        self._reconnect_task: Optional[asyncio.Task] = None
+
+        logger.info("Bitget WebSocket 客户端初始化完成")
+
+    async def connect(self) -> bool:
+        """
+        连接到 Bitget WebSocket
+
+        Returns:
+            连接是否成功
+        """
+        try:
+            logger.info(f"正在连接 Bitget WebSocket: {self.WS_URL}")
+            self._ws = await websockets.connect(
+                self.WS_URL,
+                ping_interval=self.HEARTBEAT_INTERVAL,
+                ping_timeout=10,
+                close_timeout=10
+            )
+
+            self._running = True
+            logger.info("✅ Bitget WebSocket 连接成功")
+
+            # 启动消息接收循环
+            asyncio.create_task(self._message_loop())
+
+            # 启动心跳任务
+            self._heartbeat_task = asyncio.create_task(self._heartbeat_loop())
+
+            return True
+
+        except Exception as e:
+            logger.error(f"❌ Bitget WebSocket 连接失败: {e}")
+            return False
+
+    async def disconnect(self):
+        """断开 WebSocket 连接"""
+        logger.info("正在断开 Bitget WebSocket...")
+
+        self._running = False
+
+        # 取消心跳任务
+        if self._heartbeat_task:
+            self._heartbeat_task.cancel()
+            self._heartbeat_task = None
+
+        # 取消重连任务
+        if self._reconnect_task:
+            self._reconnect_task.cancel()
+            self._reconnect_task = None
+
+        # 关闭 WebSocket 连接
+        if self._ws:
+            await self._ws.close()
+            self._ws = None
+
+        logger.info("Bitget WebSocket 已断开")
+
+    async def subscribe(self, symbols: list) -> bool:
+        """
+        订阅交易对价格
+
+        Args:
+            symbols: 交易对列表，如 ['BTCUSDT', 'ETHUSDT']
+
+        Returns:
+            是否订阅成功
+        """
+        if not self._ws or not self._running:
+            logger.warning("WebSocket 未连接，无法订阅")
+            return False
+
+        try:
+            # 构建订阅消息 (根据 Bitget 官方文档)
+            # USDT-FUTURES = USDT 永续合约
+            args = []
+            for symbol in symbols:
+                if symbol not in self._subscribed_symbols:
+                    args.append({
+                        "instType": "USDT-FUTURES",
+                        "channel": "ticker",
+                        "instId": symbol
+                    })
+                    self._subscribed_symbols.add(symbol)
+
+            if not args:
+                logger.info("所有交易对已订阅")
+                return True
+
+            message = {
+                "op": "subscribe",
+                "args": args
+            }
+
+            await self._ws.send(json.dumps(message))
+            logger.info(f"✅ 订阅 {len(args)} 个交易对: {[s['instId'] for s in args]}")
+
+            return True
+
+        except Exception as e:
+            logger.error(f"订阅失败: {e}")
+            return False
+
+    async def unsubscribe(self, symbols: list) -> bool:
+        """
+        取消订阅交易对价格
+
+        Args:
+            symbols: 交易对列表
+
+        Returns:
+            是否取消成功
+        """
+        if not self._ws or not self._running:
+            return False
+
+        try:
+            args = []
+            for symbol in symbols:
+                if symbol in self._subscribed_symbols:
+                    args.append({
+                        "instType": "USDT-FUTURES",
+                        "channel": "ticker",
+                        "instId": symbol
+                    })
+                    self._subscribed_symbols.discard(symbol)
+
+            if not args:
+                return True
+
+            message = {
+                "op": "unsubscribe",
+                "args": args
+            }
+
+            await self._ws.send(json.dumps(message))
+            logger.info(f"取消订阅 {len(args)} 个交易对")
+
+            return True
+
+        except Exception as e:
+            logger.error(f"取消订阅失败: {e}")
+            return False
+
+    def get_price(self, symbol: str) -> Optional[float]:
+        """
+        获取交易对的最新价格（从缓存）
+
+        Args:
+            symbol: 交易对
+
+        Returns:
+            最新价格，如果未订阅则返回 None
+        """
+        return self._prices.get(symbol)
+
+    def get_all_prices(self) -> Dict[str, float]:
+        """
+        获取所有已订阅交易对的价格
+
+        Returns:
+            {symbol: price} 字典
+        """
+        return self._prices.copy()
+
+    def on_price_update(self, symbol: str, callback: Callable[[str, float, Dict], None]):
+        """
+        注册价格更新回调
+
+        Args:
+            symbol: 交易对，'*' 表示所有交易对
+            callback: 回调函数 (symbol, price, data) -> None
+        """
+        if symbol not in self._callbacks:
+            self._callbacks[symbol] = set()
+        self._callbacks[symbol].add(callback)
+        logger.debug(f"注册价格回调: {symbol}")
+
+    def off_price_update(self, symbol: str, callback: Callable):
+        """
+        取消价格更新回调
+
+        Args:
+            symbol: 交易对
+            callback: 回调函数
+        """
+        if symbol in self._callbacks:
+            self._callbacks[symbol].discard(callback)
+
+    async def _message_loop(self):
+        """消息接收循环"""
+        try:
+            async for message in self._ws:
+                await self._handle_message(message)
+
+        except websockets.ConnectionClosed:
+            logger.warning("WebSocket 连接已关闭")
+            if self._running:
+                # 自动重连
+                self._schedule_reconnect()
+
+        except Exception as e:
+            logger.error(f"消息循环错误: {e}")
+            if self._running:
+                self._schedule_reconnect()
+
+    async def _handle_message(self, message: str):
+        """
+        处理接收到的消息 (v2 API 格式)
+
+        Args:
+            message: WebSocket 消息
+        """
+        try:
+            data = json.loads(message)
+
+            # 调试：记录所有收到的消息
+            logger.info(f"📨 收到消息: action={data.get('action', 'unknown')}, event={data.get('event', 'none')}")
+
+            # v2 API: 订阅/取消订阅确认事件 (使用 event 字段)
+            if data.get('event') == 'subscribe':
+                logger.info(f"✅ 订阅确认: {data}")
+                return
+
+            if data.get('event') == 'unsubscribe':
+                logger.info(f"✅ 取消订阅确认: {data}")
+                return
+
+            if data.get('event') == 'error':
+                logger.error(f"❌ WebSocket 错误: {data}")
+                return
+
+            # v2 API: ticker 数据格式 (使用 action 字段)
+            # {"action": "snapshot" or "update", "data": [...], "arg": {...}}
+            if 'data' in data and isinstance(data['data'], list):
+                # 处理 data 数组中的每个 ticker
+                for ticker_item in data['data']:
+                    if 'instId' in ticker_item or 'lastPr' in ticker_item:
+                        self._process_ticker(ticker_item)
+
+        except json.JSONDecodeError:
+            logger.warning(f"无法解析消息: {message[:100]}")
+        except Exception as e:
+            logger.error(f"处理消息错误: {e}")
+
+    def _process_ticker(self, ticker: Dict[str, Any]):
+        """
+        处理 ticker 数据 (v2 API 格式)
+
+        Args:
+            ticker: ticker 数据，包含 instId 和 lastPr 字段
+        """
+        try:
+            # v2 API: 直接从 ticker 获取 instId 和 lastPr
+            symbol = ticker.get('instId', '')
+            price_str = ticker.get('lastPr', '0')
+
+            if not symbol:
+                logger.debug(f"跳过无效 ticker (无 instId): {ticker}")
+                return
+
+            try:
+                price = float(price_str)
+            except (ValueError, TypeError):
+                logger.debug(f"跳过无效 ticker (价格无效): symbol={symbol}, price_str={price_str}")
+                return
+
+            if price == 0:
+                logger.debug(f"跳过无效 ticker (价格为0): symbol={symbol}")
+                return
+
+            # 更新价格缓存
+            old_price = self._prices.get(symbol)
+            self._prices[symbol] = price
+
+            # 触发回调
+            self._trigger_callbacks(symbol, price, ticker)
+
+            # 价格变化日志 - 改为 info 级别方便调试
+            logger.info(f"💰 {symbol}: ${price:,.2f}")
+            if old_price and old_price != price:
+                change = ((price - old_price) / old_price) * 100
+                logger.debug(f"   变化: {change:+.2f}%")
+
+        except Exception as e:
+            logger.error(f"解析 ticker 数据错误: {e}")
+
+    def _trigger_callbacks(self, symbol: str, price: float, data: Dict):
+        """
+        触发价格更新回调
+
+        Args:
+            symbol: 交易对
+            price: 价格
+            data: 完整的 ticker 数据
+        """
+        # 触发该交易对的回调
+        if symbol in self._callbacks:
+            for callback in self._callbacks[symbol]:
+                try:
+                    callback(symbol, price, data)
+                except Exception as e:
+                    logger.error(f"回调函数错误 ({symbol}): {e}")
+
+        # 触发全局回调（'*'）
+        if '*' in self._callbacks:
+            for callback in self._callbacks['*']:
+                try:
+                    callback(symbol, price, data)
+                except Exception as e:
+                    logger.error(f"全局回调函数错误: {e}")
+
+    async def _heartbeat_loop(self):
+        """心跳循环"""
+        while self._running and self._ws:
+            try:
+                await asyncio.sleep(self.HEARTBEAT_INTERVAL)
+
+                # 发送 ping
+                await self._ws.ping()
+
+            except asyncio.CancelledError:
+                break
+            except Exception as e:
+                logger.error(f"心跳错误: {e}")
+                self._schedule_reconnect()
+                break
+
+    def _schedule_reconnect(self):
+        """安排重连"""
+        if not self._running:
+            return
+
+        if self._reconnect_task and not self._reconnect_task.done():
+            return  # 已经有重连任务在运行
+
+        async def reconnect():
+            await asyncio.sleep(self.RECONNECT_INTERVAL)
+            if self._running:
+                logger.info("尝试重新连接...")
+                await self.disconnect()
+                if await self.connect():
+                    # 重新订阅之前的交易对
+                    if self._subscribed_symbols:
+                        await self.subscribe(list(self._subscribed_symbols))
+
+        self._reconnect_task = asyncio.create_task(reconnect())
+
+    @property
+    def is_connected(self) -> bool:
+        """是否已连接"""
+        return self._ws is not None and self._running
+
+    @property
+    def subscribed_symbols(self) -> Set[str]:
+        """已订阅的交易对"""
+        return self._subscribed_symbols.copy()
+
+
+# 全局实例
+_bitget_ws_client: Optional[BitgetWebSocketClient] = None
+
+
+def get_bitget_ws_client() -> Optional[BitgetWebSocketClient]:
+    """
+    获取 Bitget WebSocket 客户端单例
+
+    Returns:
+        WebSocket 客户端实例，如果 websockets 库未安装则返回 None
+    """
+    global _bitget_ws_client
+    if _bitget_ws_client is None:
+        try:
+            _bitget_ws_client = BitgetWebSocketClient()
+        except ImportError:
+            logger.warning("websockets 库未安装，WebSocket 功能不可用")
+            return None
+    return _bitget_ws_client
diff --git a/backend/app/services/price_monitor_service.py b/backend/app/services/price_monitor_service.py
index 67cf467..2212491 100644
--- a/backend/app/services/price_monitor_service.py
+++ b/backend/app/services/price_monitor_service.py
@@ -1,6 +1,7 @@
 """
-价格监控服务 - 使用轮询方式获取实时价格（更稳定）
+价格监控服务 - 支持 WebSocket 实时推送和轮询两种模式（统一使用 Bitget 数据源）
 """
+import asyncio
 import threading
 import time
 import requests
@@ -10,10 +11,7 @@ from app.config import get_settings
 
 
 class PriceMonitorService:
-    """实时价格监控服务（轮询模式）"""
-
-    # Binance API
-    BASE_URL = "https://api.binance.com"
+    """实时价格监控服务（支持 WebSocket 和轮询两种模式，统一使用 Bitget）"""
 
     _instance = None
     _initialized = False
@@ -37,22 +35,40 @@ class PriceMonitorService:
         self.price_callbacks: List[Callable[[str, float], None]] = []
         self.latest_prices: Dict[str, float] = {}
         self._lock = threading.Lock()
+
+        # 模式选择
+        self._use_websocket = getattr(self.settings, 'use_bitget_websocket', False)
+
+        # 轮询模式相关（使用 Bitget REST API）
         self._poll_thread: Optional[threading.Thread] = None
         self._poll_interval = 3  # 轮询间隔（秒）
         self._session = requests.Session()
+        self._bitget_rest_url = "https://api.bitget.com"  # Bitget REST API
 
-        logger.info(f"[PriceMonitor:{id(self)}] 价格监控服务初始化完成（轮询模式）")
+        # WebSocket 模式相关
+        self._ws_thread: Optional[threading.Thread] = None
+        self._ws_loop: Optional[asyncio.AbstractEventLoop] = None
+        self._ws_client = None
+
+        logger.info(f"价格监控服务初始化完成 (模式: {'Bitget WebSocket' if self._use_websocket else 'Bitget REST 轮询'})")
 
     def start(self):
-        """启动价格轮询"""
+        """启动价格监控"""
         if self.running:
-            logger.debug(f"[PriceMonitor:{id(self)}] 价格监控服务已在运行")
+            logger.debug("价格监控服务已在运行")
             return
 
         self.running = True
 
+        if self._use_websocket:
+            self._start_websocket()
+        else:
+            self._start_polling()
+
+    def _start_polling(self):
+        """启动轮询模式"""
         def _poll_loop():
-            logger.info(f"[PriceMonitor:{id(self)}] 价格轮询已启动，间隔 {self._poll_interval} 秒")
+            logger.info(f"价格轮询已启动，间隔 {self._poll_interval} 秒")
             while self.running:
                 try:
                     self._fetch_prices()
@@ -70,16 +86,90 @@ class PriceMonitorService:
             self._poll_thread = threading.Thread(target=_poll_loop, daemon=True)
             self._poll_thread.start()
 
+    def _start_websocket(self):
+        """启动 WebSocket 模式"""
+        def _run_ws():
+            """在新线程中运行 WebSocket"""
+            # 创建新的事件循环
+            self._ws_loop = asyncio.new_event_loop()
+            asyncio.set_event_loop(self._ws_loop)
+
+            try:
+                # 导入 WebSocket 客户端
+                from app.services.bitget_websocket import get_bitget_ws_client
+
+                self._ws_client = get_bitget_ws_client()
+                if not self._ws_client:
+                    logger.error("无法创建 WebSocket 客户端")
+                    return
+
+                # 连接 - 在事件循环中运行
+                connect_task = self._ws_loop.create_task(self._ws_client.connect())
+                self._ws_loop.run_until_complete(connect_task)
+
+                if not connect_task.result():
+                    logger.error("WebSocket 连接失败")
+                    return
+
+                # 注册价格更新回调
+                self._ws_client.on_price_update('*', self._on_ws_price_update)
+
+                # 订阅已有的交易对
+                if self.subscribed_symbols:
+                    subscribe_task = self._ws_loop.create_task(
+                        self._ws_client.subscribe(list(self.subscribed_symbols))
+                    )
+                    self._ws_loop.run_until_complete(subscribe_task)
+
+                # 运行事件循环
+                self._ws_loop.run_forever()
+
+            except Exception as e:
+                logger.error(f"WebSocket 线程错误: {e}")
+            finally:
+                logger.info("WebSocket 线程已退出")
+
+        # 防止重复创建线程
+        if self._ws_thread is None or not self._ws_thread.is_alive():
+            self._ws_thread = threading.Thread(target=_run_ws, daemon=True)
+            self._ws_thread.start()
+
+    def _on_ws_price_update(self, symbol: str, price: float, data: Dict):
+        """
+        WebSocket 价格更新回调
+
+        Args:
+            symbol: 交易对
+            price: 新价格
+            data: 完整的 ticker 数据
+        """
+        self._update_price(symbol, price)
+
     def stop(self):
-        """停止价格轮询"""
+        """停止价格监控"""
         if not self.running:
             return
 
         self.running = False
+
+        # 停止 WebSocket
+        if self._use_websocket and self._ws_loop and self._ws_client:
+            # 在事件循环中停止 WebSocket
+            asyncio.run_coroutine_threadsafe(
+                self._ws_client.disconnect(),
+                self._ws_loop
+            )
+            # 停止事件循环
+            self._ws_loop.call_soon_threadsafe(self._ws_loop.stop)
+
+        # 停止轮询
+        if self._poll_thread:
+            self._poll_thread.join(timeout=2)
+
         logger.info("价格监控服务已停止")
 
     def _fetch_prices(self):
-        """获取所有订阅交易对的价格"""
+        """获取所有订阅交易对的价格（轮询模式）"""
         if not self.subscribed_symbols:
             return
 
@@ -94,32 +184,54 @@ class PriceMonitorService:
             self._fetch_all_prices(symbols)
 
     def _fetch_single_price(self, symbol: str):
-        """获取单个交易对价格"""
+        """获取单个交易对价格（使用 Bitget REST API）"""
         try:
-            url = f"{self.BASE_URL}/api/v3/ticker/price"
-            response = self._session.get(url, params={'symbol': symbol}, timeout=5)
+            url = f"{self._bitget_rest_url}/api/v3/market/tickers"
+            params = {
+                'category': 'USDT-FUTURES',
+                'symbol': symbol
+            }
+            response = self._session.get(url, params=params, timeout=5)
             response.raise_for_status()
-            data = response.json()
-            price = float(data['price'])
-            self._update_price(symbol, price)
+            result = response.json()
+
+            if result.get('code') != '00000':
+                logger.debug(f"Bitget API 错误: {result.get('msg')}")
+                return
+
+            data = result.get('data', [])
+            if data:
+                price = float(data[0].get('lastPr', '0'))
+                if price > 0:
+                    self._update_price(symbol, price)
+
         except Exception as e:
             logger.debug(f"获取 {symbol} 价格失败: {e}")
 
     def _fetch_all_prices(self, symbols: List[str]):
-        """批量获取价格"""
+        """批量获取价格（使用 Bitget REST API）"""
         try:
-            url = f"{self.BASE_URL}/api/v3/ticker/price"
-            response = self._session.get(url, timeout=10)
+            url = f"{self._bitget_rest_url}/api/v3/market/tickers"
+            params = {'category': 'USDT-FUTURES'}
+            response = self._session.get(url, params=params, timeout=10)
             response.raise_for_status()
-            all_prices = response.json()
+            result = response.json()
+
+            if result.get('code') != '00000':
+                logger.debug(f"Bitget API 错误: {result.get('msg')}")
+                return
+
+            all_tickers = result.get('data', [])
+            symbol_set = set(symbols)
 
             # 过滤出订阅的交易对
-            symbol_set = set(symbols)
-            for item in all_prices:
-                symbol = item['symbol']
+            for ticker in all_tickers:
+                symbol = ticker.get('instId')
                 if symbol in symbol_set:
-                    price = float(item['price'])
-                    self._update_price(symbol, price)
+                    price = float(ticker.get('lastPr', '0'))
+                    if price > 0:
+                        self._update_price(symbol, price)
+
         except Exception as e:
             logger.debug(f"批量获取价格失败: {e}")
 
@@ -148,33 +260,47 @@ class PriceMonitorService:
         Args:
             symbol: 交易对，如 "BTCUSDT"
         """
-        import traceback
         symbol = symbol.upper()
 
-        # 添加调用栈追踪
-        stack = traceback.extract_stack()
-        caller = stack[-2] if len(stack) >= 2 else None
-
         if symbol in self.subscribed_symbols:
-            logger.debug(f"[PriceMonitor:{id(self)}] {symbol} 已订阅，跳过 (来自: {caller})")
+            logger.debug(f"{symbol} 已订阅，跳过")
             return
 
         self.subscribed_symbols.add(symbol)
-        logger.info(f"[PriceMonitor:{id(self)}] 已订阅 {symbol} 价格更新 (来自: {caller}，当前订阅: {self.subscribed_symbols})")
+        logger.info(f"已订阅 {symbol} 价格更新 (当前订阅: {len(self.subscribed_symbols)} 个)")
+
+        # WebSocket 模式：立即订阅
+        if self._use_websocket and self._ws_client and self._ws_loop and self._ws_loop.is_running():
+            asyncio.run_coroutine_threadsafe(
+                self._ws_client.subscribe([symbol]),
+                self._ws_loop
+            )
+        elif self._use_websocket:
+            # WebSocket 还未就绪，将在连接后自动订阅
+            logger.debug(f"WebSocket 未就绪，{symbol} 将在连接后自动订阅")
+        # 轮询模式：立即获取一次价格
+        elif not self._use_websocket:
+            self._fetch_single_price(symbol)
 
         # 如果服务未启动，自动启动
         if not self.running:
             self.start()
 
-        # 立即获取一次价格
-        self._fetch_single_price(symbol)
-
     def unsubscribe_symbol(self, symbol: str):
         """取消订阅交易对"""
         symbol = symbol.upper()
+
         if symbol in self.subscribed_symbols:
             self.subscribed_symbols.discard(symbol)
             self.latest_prices.pop(symbol, None)
+
+            # WebSocket 模式：取消订阅
+            if self._use_websocket and self._ws_client:
+                asyncio.run_coroutine_threadsafe(
+                    self._ws_client.unsubscribe([symbol]),
+                    self._ws_loop
+                )
+
             logger.info(f"已取消订阅 {symbol}")
 
     def add_price_callback(self, callback: Callable[[str, float], None]):
@@ -211,7 +337,10 @@ class PriceMonitorService:
         return self.running
 
     def set_poll_interval(self, seconds: int):
-        """设置轮询间隔（秒）"""
+        """设置轮询间隔（秒），仅对轮询模式有效"""
+        if self._use_websocket:
+            logger.warning("WebSocket 模式下不支持设置轮询间隔")
+            return
         self._poll_interval = max(1, seconds)
         logger.info(f"轮询间隔已设置为 {self._poll_interval} 秒")
 
@@ -224,4 +353,3 @@ def get_price_monitor_service() -> PriceMonitorService:
     """获取价格监控服务单例"""
     # 直接使用类单例，不使用全局变量（避免 reload 时重置）
     return PriceMonitorService()
-
diff --git a/backend/requirements.txt b/backend/requirements.txt
index 020dede..43b4ac0 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -23,6 +23,7 @@ python-jose[cryptography]==3.3.0
 python-binance>=1.0.19
 httpx>=0.27.0
 ccxt>=4.0.0  # 统一交易所API接口，支持Bitget等主流交易所
+websockets>=12.0  # WebSocket 支持，用于实时价格更新
 
 # 新闻智能体依赖
 feedparser>=6.0.10
diff --git a/backend/test_websocket.py b/backend/test_websocket.py
new file mode 100644
index 0000000..3b21ddf
--- /dev/null
+++ b/backend/test_websocket.py
@@ -0,0 +1,205 @@
+"""
+测试 Bitget WebSocket 价格监控
+"""
+import asyncio
+import sys
+import os
+
+# 添加项目路径
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..'))
+
+from app.services.bitget_websocket import BitgetWebSocketClient
+from app.utils.logger import logger
+
+
+async def test_websocket():
+    """测试 WebSocket 连接和价格订阅"""
+
+    logger.info("=" * 60)
+    logger.info("Bitget WebSocket 测试开始")
+    logger.info("=" * 60)
+
+    # 创建 WebSocket 客户端
+    client = BitgetWebSocketClient()
+
+    # 注册价格回调
+    def on_price_update(symbol: str, price: float, data: dict):
+        """价格更新回调"""
+        import datetime
+        timestamp = datetime.datetime.now().strftime("%H:%M:%S.%f")[:-3]
+        print(f"[{timestamp}] {symbol}: ${price:,.2f}")
+
+        # 显示更多详细信息
+        if 'open24h' in data:
+            change_24h = ((price - float(data['open24h'])) / float(data['open24h'])) * 100
+            print(f"  └─ 24h涨跌: {change_24h:+.2f}%")
+
+    client.on_price_update('*', on_price_update)
+
+    # 连接
+    logger.info("正在连接 Bitget WebSocket...")
+    if not await client.connect():
+        logger.error("❌ 连接失败")
+        return False
+
+    logger.info("✅ 连接成功")
+
+    # 订阅交易对
+    symbols = ['BTCUSDT', 'ETHUSDT', 'SOLUSDT']
+    logger.info(f"正在订阅: {', '.join(symbols)}")
+
+    if not await client.subscribe(symbols):
+        logger.error("❌ 订阅失败")
+        return False
+
+    logger.info(f"✅ 订阅成功: {symbols}")
+
+    # 显示当前订阅状态
+    logger.info(f"已订阅交易对: {client.subscribed_symbols}")
+    logger.info(f"连接状态: {client.is_connected}")
+
+    # 接收价格更新（30秒）
+    logger.info("\n开始接收价格更新（30秒）...")
+    logger.info("-" * 60)
+
+    try:
+        # 等待30秒接收数据
+        await asyncio.sleep(30)
+
+    except KeyboardInterrupt:
+        logger.info("\n用户中断")
+
+    # 显示接收到的价格
+    logger.info("-" * 60)
+    logger.info("当前价格缓存:")
+    prices = client.get_all_prices()
+    for symbol, price in prices.items():
+        print(f"  {symbol}: ${price:,.2f}")
+
+    # 断开连接
+    logger.info("\n正在断开连接...")
+    await client.disconnect()
+    logger.info("✅ 已断开连接")
+
+    logger.info("=" * 60)
+    logger.info("测试完成")
+    logger.info("=" * 60)
+
+    return True
+
+
+async def test_reconnect():
+    """测试自动重连功能"""
+
+    logger.info("=" * 60)
+    logger.info("测试自动重连功能")
+    logger.info("=" * 60)
+
+    client = BitgetWebSocketClient()
+
+    price_updates = []
+
+    def on_price_update(symbol: str, price: float, data: dict):
+        price_updates.append((symbol, price))
+        logger.info(f"[重连测试] {symbol}: ${price:,.2f}")
+
+    client.on_price_update('*', on_price_update)
+
+    # 第一次连接
+    logger.info("第一次连接...")
+    await client.connect()
+    await client.subscribe(['BTCUSDT'])
+
+    # 等待5秒接收数据
+    await asyncio.sleep(5)
+    logger.info(f"接收到的价格更新: {len(price_updates)} 次")
+
+    # 模拟断线（手动断开）
+    logger.info("\n模拟断线...")
+    await client.disconnect()
+
+    # 等待2秒
+    await asyncio.sleep(2)
+
+    # 重新连接
+    logger.info("重新连接...")
+    if await client.connect():
+        logger.info("✅ 重连成功")
+        await client.subscribe(['BTCUSDT'])
+
+        # 等待5秒接收数据
+        await asyncio.sleep(5)
+
+        initial_count = len(price_updates)
+        logger.info(f"重连后接收到的价格更新: {len(price_updates) - initial_count} 次")
+    else:
+        logger.error("❌ 重连失败")
+
+    await client.disconnect()
+    logger.info("重连测试完成")
+
+    return True
+
+
+def test_integration():
+    """测试与 price_monitor_service 的集成"""
+
+    logger.info("=" * 60)
+    logger.info("测试 PriceMonitorService 集成")
+    logger.info("=" * 60)
+
+    # 设置环境变量启用 WebSocket
+    os.environ['USE_BITGET_WEBSOCKET'] = 'true'
+
+    from app.services.price_monitor_service import get_price_monitor_service
+
+    monitor = get_price_monitor_service()
+
+    # 添加回调
+    update_count = {'count': 0}
+
+    def on_update(symbol: str, price: float):
+        update_count['count'] += 1
+        logger.info(f"[集成测试] {symbol}: ${price:,.2f}")
+
+    monitor.add_price_callback(on_update)
+
+    # 订阅交易对
+    logger.info("订阅 BTCUSDT...")
+    monitor.subscribe_symbol('BTCUSDT')
+
+    # 等待10秒
+    logger.info("等待10秒接收价格更新...")
+    import time
+    time.sleep(10)
+
+    logger.info(f"接收到 {update_count['count']} 次价格更新")
+    logger.info(f"当前价格: {monitor.get_latest_price('BTCUSDT')}")
+
+    # 停止监控
+    monitor.stop()
+
+    logger.info("集成测试完成")
+
+    return True
+
+
+def main():
+    """主测试函数"""
+    import argparse
+
+    parser = argparse.ArgumentParser(description='测试 Bitget WebSocket')
+    parser.add_argument('--test', choices=['basic', 'reconnect', 'integration'],
+                       default='basic', help='测试类型')
+    args = parser.parse_args()
+
+    if args.test == 'basic':
+        asyncio.run(test_websocket())
+    elif args.test == 'reconnect':
+        asyncio.run(test_reconnect())
+    elif args.test == 'integration':
+        test_integration()
+
+
+if __name__ == '__main__':
+    main()