diff --git a/app/config.py b/app/config.py
index 795b479..f0d0c92 100644
--- a/app/config.py
+++ b/app/config.py
@@ -107,6 +107,14 @@ class EdgeAuthConfig:
     enabled: bool = False # 是否启用 token 校验
 
 
+@dataclass
+class DailyReportConfig:
+    """日报配置"""
+    enabled: bool = False
+    send_hour: int = 9
+    send_minute: int = 0
+
+
 @dataclass
 class CameraNameConfig:
     """摄像头名称配置"""
@@ -125,6 +133,7 @@ class Settings(BaseModel):
     agent: AgentConfig = AgentConfig()
     work_order: WorkOrderConfig = WorkOrderConfig()
     redis: RedisConfig = RedisConfig()
+    daily_report: DailyReportConfig = DailyReportConfig()
     camera_name: CameraNameConfig = CameraNameConfig()
     edge_auth: EdgeAuthConfig = EdgeAuthConfig()
 
@@ -203,6 +212,11 @@ def load_settings() -> Settings:
             wvp_api_base=os.getenv("WVP_API_BASE", "http://localhost:18080"),
             query_timeout=int(os.getenv("CAMERA_QUERY_TIMEOUT", "15")),
         ),
+        daily_report=DailyReportConfig(
+            enabled=os.getenv("DAILY_REPORT_ENABLED", "false").lower() == "true",
+            send_hour=int(os.getenv("DAILY_REPORT_HOUR", "9")),
+            send_minute=int(os.getenv("DAILY_REPORT_MINUTE", "0")),
+        ),
         edge_auth=EdgeAuthConfig(
             token=os.getenv("EDGE_AUTH_TOKEN", ""),
             enabled=os.getenv("EDGE_AUTH_ENABLED", "false").lower() == "true",
diff --git a/app/main.py b/app/main.py
index 5d7ba42..5a05d06 100644
--- a/app/main.py
+++ b/app/main.py
@@ -72,11 +72,23 @@ async def lifespan(app: FastAPI):
     wo_client = get_work_order_client()
     wo_client.init(settings.work_order)
 
+    # 启动日报定时任务
+    report_task = None
+    if settings.daily_report.enabled and settings.wechat.group_chat_id:
+        from app.services.daily_report_service import start_daily_report_scheduler
+        report_task = asyncio.create_task(start_daily_report_scheduler())
+
     logger.info("AI 告警平台启动完成")
 
     yield
 
     # 关闭
+    if report_task:
+        report_task.cancel()
+        try:
+            await report_task
+        except asyncio.CancelledError:
+            pass
     logger.info("AI 告警平台已关闭")
 
 
diff --git a/app/services/daily_report_service.py b/app/services/daily_report_service.py
new file mode 100644
index 0000000..50654a2
--- /dev/null
+++ b/app/services/daily_report_service.py
@@ -0,0 +1,202 @@
+"""
+每日告警日报定时推送服务
+
+每天定时生成前一天的告警汇总，发送到企微群聊。
+"""
+import asyncio
+from datetime import datetime, timedelta
+from collections import Counter
+from typing import Dict, List, Optional, Tuple
+
+from app.utils.logger import logger
+from app.config import settings
+
+# 告警类型中文映射（与 wechat_service 保持一致）
+ALARM_TYPE_NAMES = {
+    "leave_post": "人员离岗",
+    "intrusion": "周界入侵",
+    "illegal_parking": "车辆违停",
+    "vehicle_congestion": "车辆拥堵",
+}
+
+WEEKDAY_NAMES = ["周一", "周二", "周三", "周四", "周五", "周六", "周日"]
+
+
+async def generate_daily_report() -> Optional[str]:
+    """生成昨日告警日报 Markdown 内容"""
+    from app.services.alarm_event_service import get_alarm_event_service
+    from app.services.camera_name_service import get_camera_name_service
+    from app.utils.timezone import beijing_now
+
+    svc = get_alarm_event_service()
+    camera_svc = get_camera_name_service()
+
+    now = beijing_now()
+    today_start = now.replace(hour=0, minute=0, second=0, microsecond=0)
+    yesterday_start = today_start - timedelta(days=1)
+    day_before_start = today_start - timedelta(days=2)
+
+    # 查询昨日和前日全量告警（page_size 设大，拿全量）
+    yesterday_alarms, yesterday_total = svc.get_alarms(
+        start_time=yesterday_start, end_time=today_start, page=1, page_size=10000
+    )
+    _, prev_total = svc.get_alarms(
+        start_time=day_before_start, end_time=yesterday_start, page=1, page_size=1
+    )
+
+    # 无告警时发送简短通知
+    if yesterday_total == 0:
+        date_str = yesterday_start.strftime("%m-%d")
+        weekday = WEEKDAY_NAMES[yesterday_start.weekday()]
+        return (
+            f"**AI安防日报 — {date_str}（{weekday}）**\n\n"
+            f">昨日告警总计：**0** 条\n"
+            f">系统运行正常，无异常事件"
+        )
+
+    # ---- 统计 ----
+    type_counter: Counter = Counter()
+    device_counter: Counter = Counter()
+    handle_done = 0
+    handle_ignored = 0
+    handle_unhandled = 0
+    false_alarm = 0
+    response_times: List[float] = []
+
+    for a in yesterday_alarms:
+        type_counter[a.alarm_type] += 1
+        device_counter[a.device_id] += 1
+
+        # 处理状态统计
+        if a.handle_status == "DONE":
+            handle_done += 1
+        elif a.handle_status == "IGNORED":
+            handle_ignored += 1
+        else:
+            handle_unhandled += 1
+
+        # 误报统计
+        if a.alarm_status == "FALSE":
+            false_alarm += 1
+
+        # 响应时长（从 event_time 到 handled_at）
+        if a.handled_at and a.event_time:
+            delta = (a.handled_at - a.event_time).total_seconds() / 60.0
+            if delta >= 0:
+                response_times.append(delta)
+
+    # 环比变化
+    if prev_total > 0:
+        change_pct = (yesterday_total - prev_total) / prev_total * 100
+        if change_pct > 0:
+            change_str = f"前日{prev_total}条，↑{change_pct:.1f}%"
+        elif change_pct < 0:
+            change_str = f"前日{prev_total}条，↓{abs(change_pct):.1f}%"
+        else:
+            change_str = f"前日{prev_total}条，持平"
+    else:
+        change_str = "前日无告警"
+
+    # 平均响应时长
+    if response_times:
+        avg_resp = sum(response_times) / len(response_times)
+        if avg_resp < 60:
+            resp_str = f"{avg_resp:.1f}分钟"
+        else:
+            resp_str = f"{avg_resp / 60:.1f}小时"
+    else:
+        resp_str = "暂无数据"
+
+    # 设备 Top5 — 批量获取摄像头名称
+    top5_devices = device_counter.most_common(5)
+    device_ids = [d[0] for d in top5_devices]
+    try:
+        name_map = await camera_svc.get_display_names_batch(device_ids)
+    except Exception as e:
+        logger.warning(f"日报获取摄像头名称失败: {e}")
+        name_map = {}
+
+    # ---- 组装 Markdown ----
+    date_str = yesterday_start.strftime("%m-%d")
+    weekday = WEEKDAY_NAMES[yesterday_start.weekday()]
+
+    lines = [
+        f"**AI安防日报 — {date_str}（{weekday}）**",
+        "",
+        f">昨日告警总计：<font color=\"warning\">{yesterday_total}</font> 条（{change_str}）",
+        f">待处理：<font color=\"warning\">{handle_unhandled}</font> 条",
+        f">已处理：{handle_done}条 | 已忽略：{handle_ignored}条 | 误报：{false_alarm}条",
+        f">平均响应：<font color=\"info\">{resp_str}</font>",
+    ]
+
+    # 按类型分布
+    if type_counter:
+        lines.append("")
+        lines.append("**按类型分布**")
+        for alarm_type, count in type_counter.most_common():
+            type_name = ALARM_TYPE_NAMES.get(alarm_type, alarm_type)
+            lines.append(f">{type_name}：{count}条")
+
+    # 设备 Top5
+    if top5_devices:
+        lines.append("")
+        lines.append("**告警设备 Top5**")
+        for i, (device_id, count) in enumerate(top5_devices, 1):
+            display_name = name_map.get(device_id, device_id)
+            lines.append(f">{i}. {display_name} — {count}条")
+
+    return "\n".join(lines)
+
+
+async def _send_daily_report():
+    """生成并发送日报"""
+    from app.services.wechat_service import get_wechat_service
+
+    chat_id = settings.wechat.group_chat_id
+    if not chat_id:
+        logger.warning("日报发送跳过：未配置 group_chat_id")
+        return
+
+    try:
+        content = await generate_daily_report()
+        if not content:
+            logger.info("日报生成内容为空，跳过发送")
+            return
+
+        wechat_svc = get_wechat_service()
+        ok = await wechat_svc.send_group_markdown(chat_id, content)
+        if ok:
+            logger.info("日报已发送到企微群聊")
+        else:
+            logger.error("日报发送失败")
+    except Exception:
+        logger.exception("日报生成或发送异常")
+
+
+def _seconds_until(hour: int, minute: int) -> float:
+    """计算距离下一个 HH:MM 的秒数"""
+    from app.utils.timezone import beijing_now
+
+    now = beijing_now()
+    target = now.replace(hour=hour, minute=minute, second=0, microsecond=0)
+    if target <= now:
+        target += timedelta(days=1)
+    return (target - now).total_seconds()
+
+
+async def start_daily_report_scheduler():
+    """日报定时调度主循环"""
+    hour = settings.daily_report.send_hour
+    minute = settings.daily_report.send_minute
+    logger.info(f"日报定时任务已启动，每日 {hour:02d}:{minute:02d} 发送")
+
+    try:
+        while True:
+            wait = _seconds_until(hour, minute)
+            logger.debug(f"日报下次发送倒计时 {wait:.0f} 秒")
+            await asyncio.sleep(wait)
+            await _send_daily_report()
+            # 发送完等 61 秒，避免同一分钟内重复触发
+            await asyncio.sleep(61)
+    except asyncio.CancelledError:
+        logger.info("日报定时任务已停止")