diff --git a/README.md b/README.md
index 8eacd66..8494542 100644
--- a/README.md
+++ b/README.md
@@ -85,6 +85,7 @@ http://你的可访问地址:8787/auth/feishu/callback
 本项目提供 Windows 任务计划脚本。任务每天触发，但发送前会读取 `data/workday-calendar.json`，只在国家法定工作日发送：
 
 - 工作日 18:00：日报填写提醒
+- 工作日 18:50：只提醒仍未提交的人
 - 工作日 19:00：日报提交汇总
 
 这意味着：
diff --git a/daily_report/scheduled.py b/daily_report/scheduled.py
index 5509f18..b3b0668 100644
--- a/daily_report/scheduled.py
+++ b/daily_report/scheduled.py
@@ -24,7 +24,8 @@ def send_reminder() -> dict:
     payload = create_reminder_payload(f"{config.base_url}/submit")
     database = Database(config.database_path, config.employee_seed_path)
     try:
-        employees = database.list_active_employees()
+        service = ReportService(database)
+        employees = service.list_reports_for_date(date.today().isoformat())["missing"]
         if config.feishu_app_id and config.feishu_app_secret:
             token = get_tenant_access_token(config.feishu_app_id, config.feishu_app_secret)
             sent = []
diff --git a/scripts/install-linux-timers.sh b/scripts/install-linux-timers.sh
new file mode 100644
index 0000000..f78f9e3
--- /dev/null
+++ b/scripts/install-linux-timers.sh
@@ -0,0 +1,76 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+PROJECT_ROOT="/root/kaikai_test"
+
+cat > /etc/systemd/system/kaikai-daily-reminder.service <<'EOF'
+[Unit]
+Description=Kaikai Daily Report Reminder
+
+[Service]
+WorkingDirectory=/root/kaikai_test
+ExecStart=/usr/bin/python3 -m daily_report.scheduled reminder
+Type=oneshot
+EOF
+
+cat > /etc/systemd/system/kaikai-daily-reminder.timer <<'EOF'
+[Unit]
+Description=Run Kaikai Daily Report Reminder at 18:00
+
+[Timer]
+OnCalendar=*-*-* 18:00:00
+Persistent=true
+
+[Install]
+WantedBy=timers.target
+EOF
+
+cat > /etc/systemd/system/kaikai-daily-reminder-followup.service <<'EOF'
+[Unit]
+Description=Kaikai Daily Report Follow-up Reminder
+
+[Service]
+WorkingDirectory=/root/kaikai_test
+ExecStart=/usr/bin/python3 -m daily_report.scheduled reminder
+Type=oneshot
+EOF
+
+cat > /etc/systemd/system/kaikai-daily-reminder-followup.timer <<'EOF'
+[Unit]
+Description=Run Kaikai Daily Report Follow-up Reminder at 18:50
+
+[Timer]
+OnCalendar=*-*-* 18:50:00
+Persistent=true
+
+[Install]
+WantedBy=timers.target
+EOF
+
+cat > /etc/systemd/system/kaikai-daily-summary.service <<'EOF'
+[Unit]
+Description=Kaikai Daily Report Summary
+
+[Service]
+WorkingDirectory=/root/kaikai_test
+ExecStart=/usr/bin/python3 -m daily_report.scheduled summary
+Type=oneshot
+EOF
+
+cat > /etc/systemd/system/kaikai-daily-summary.timer <<'EOF'
+[Unit]
+Description=Run Kaikai Daily Report Summary at 19:00
+
+[Timer]
+OnCalendar=*-*-* 19:00:00
+Persistent=true
+
+[Install]
+WantedBy=timers.target
+EOF
+
+systemctl daemon-reload
+systemctl enable --now kaikai-daily-reminder.timer
+systemctl enable --now kaikai-daily-reminder-followup.timer
+systemctl enable --now kaikai-daily-summary.timer
+systemctl list-timers --all | grep kaikai || true
diff --git a/tests/test_scheduled.py b/tests/test_scheduled.py
index de7f80d..60933e2 100644
--- a/tests/test_scheduled.py
+++ b/tests/test_scheduled.py
@@ -3,6 +3,7 @@ from __future__ import annotations
 import json
 import tempfile
 import unittest
+from datetime import date
 from pathlib import Path
 from unittest.mock import patch
 
@@ -55,7 +56,7 @@ class ScheduledTest(unittest.TestCase):
         self.assertIn("0/2", text)
         self.assertIn("Chen、Lin", text)
 
-    def test_send_reminder_private_messages_all_active_employees(self) -> None:
+    def test_send_reminder_private_messages_missing_employees_only(self) -> None:
         with tempfile.TemporaryDirectory(prefix="daily-report-scheduled-") as temp:
             root = Path(temp)
             seed_path = root / "employees.json"
@@ -87,7 +88,8 @@ class ScheduledTest(unittest.TestCase):
 
             with patch("daily_report.config.__file__", str(fake_file)), patch.dict("os.environ", env, clear=True), patch(
                 "daily_report.scheduled.get_tenant_access_token", lambda app_id, app_secret: "tenant-token"
-            ), patch("daily_report.scheduled.send_bot_interactive_message", fake_send):
+            ), patch("daily_report.scheduled.send_bot_interactive_message", fake_send), patch("daily_report.scheduled.date") as fake_date:
+                fake_date.today.return_value = date(2026, 5, 7)
                 result = scheduled.send_reminder()
 
         self.assertEqual(result["mode"], "bot_private")