diff --git a/README.md b/README.md
index 9e46f30..fbe71bc 100644
--- a/README.md
+++ b/README.md
@@ -48,6 +48,18 @@ python backend/scripts/init_db.py
 python backend/scripts/run_api.py
 ```
 
+4. 收盘后更新并发送邮件：
+
+```powershell
+python backend/scripts/after_market_update.py --trade-date 2026-04-17 --send-email
+```
+
+默认约定：
+
+- 按 `Asia/Shanghai` 取当天日期
+- 预期定时为 A 股交易日 `17:00`
+- 只有当日成功拉到新的龙虎榜数据，才会继续生成预警、PDF 并发邮件；否则自动跳过
+
 默认地址：
 
 - `http://127.0.0.1:8000`
diff --git a/backend/scripts/after_market_update.py b/backend/scripts/after_market_update.py
new file mode 100644
index 0000000..981a4b6
--- /dev/null
+++ b/backend/scripts/after_market_update.py
@@ -0,0 +1,116 @@
+from __future__ import annotations
+
+import argparse
+from datetime import datetime
+from zoneinfo import ZoneInfo
+
+from _bootstrap import add_src_to_path
+
+add_src_to_path()
+
+from lhbfx.config import load_config
+from lhbfx.mailer import send_email
+from lhbfx.pdf_export import generate_daily_report_pdf
+from lhbfx.pipeline import generate_warnings, import_daily, rematch_traders
+from lhbfx.reporting import build_daily_report, build_email_body, default_report_output_path
+
+
+SHANGHAI_TZ = ZoneInfo("Asia/Shanghai")
+
+
+def parse_args() -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description="Run lhbfx after-market update workflow")
+    parser.add_argument("--trade-date", help="Trade date in YYYY-MM-DD format, defaults to Asia/Shanghai today")
+    parser.add_argument("--send-email", action="store_true", help="Send completion email after report generation")
+    parser.add_argument("--force", action="store_true", help="Run even if the target date is not a weekday")
+    return parser.parse_args()
+
+
+def default_trade_date() -> str:
+    return datetime.now(SHANGHAI_TZ).date().isoformat()
+
+
+def is_weekday(trade_date: str) -> bool:
+    return datetime.fromisoformat(trade_date).weekday() < 5
+
+
+def build_update_email_body(
+    *,
+    trade_date: str,
+    overview_count: int,
+    detail_count: int,
+    rematch_updated: int,
+    warning_total: int,
+    report_body: str,
+) -> str:
+    lines = [
+        f"lhbfx 收盘后更新完成 - {trade_date}",
+        "",
+        f"龙虎榜概览更新数: {overview_count}",
+        f"席位明细更新数: {detail_count}",
+        f"游资重新匹配数: {rematch_updated}",
+        f"预警总数: {warning_total}",
+        "",
+    ]
+    lines.append(report_body)
+    return "\n".join(lines)
+
+
+def main() -> None:
+    args = parse_args()
+    config = load_config()
+    trade_date = args.trade_date or default_trade_date()
+
+    if not args.force and not is_weekday(trade_date):
+        print(f"Skip {trade_date}: not a weekday, assumed non-trading day.")
+        return
+
+    import_result = import_daily(trade_date, config=config)
+    if import_result.overview_count <= 0:
+        print(f"Skip {trade_date}: no overview rows imported, source data may not be ready or market may be closed.")
+        return
+
+    rematch_result = rematch_traders(config=config)
+    warning_result = generate_warnings(config=config)
+
+    report = build_daily_report(config=config, trade_date=trade_date)
+    pdf_path = default_report_output_path(trade_date)
+    generate_daily_report_pdf(report, pdf_path)
+
+    print(
+        "After-market update finished:",
+        {
+            "trade_date": trade_date,
+            "overview_count": import_result.overview_count,
+            "detail_count": import_result.detail_count,
+            "rematch_updated": rematch_result["updated"],
+            "warning_total": warning_result["total"],
+            "pdf_path": str(pdf_path),
+        },
+    )
+
+    if args.send_email:
+        if config.mail is None:
+            raise RuntimeError("Mail config is missing")
+
+        report_body = build_email_body(report)
+        body_text = build_update_email_body(
+            trade_date=trade_date,
+            overview_count=import_result.overview_count,
+            detail_count=import_result.detail_count,
+            rematch_updated=rematch_result["updated"],
+            warning_total=warning_result["total"],
+            report_body=report_body,
+        )
+        subject = f"lhbfx 收盘后更新完成 - {trade_date}"
+        send_email(
+            mail_config=config.mail,
+            subject=subject,
+            body_text=body_text,
+            attachments=[pdf_path],
+        )
+        print(f"Email sent to: {', '.join(config.mail.recipients)}")
+
+
+if __name__ == "__main__":
+    main()