diff --git a/bot/models/reminder.py b/bot/models/reminder.py
index c2d2ca5..2f269a2 100644
--- a/bot/models/reminder.py
+++ b/bot/models/reminder.py
@@ -3,6 +3,8 @@ from __future__ import annotations
 from datetime import datetime
 from typing import List, Optional
 
+import pytz
+
 from sqlalchemy import (
     Boolean,
     DateTime,
@@ -74,7 +76,11 @@ class Reminder(Base):
 
     def schedule_summary(self) -> str:
         if self.reminder_type == "once" and self.once_time:
-            return self.once_time.strftime("%Y-%m-%d %H:%M")
+            tz = pytz.timezone("Asia/Shanghai")
+            dt = self.once_time
+            if dt.tzinfo is None:
+                dt = pytz.utc.localize(dt)
+            return dt.astimezone(tz).strftime("%Y-%m-%d %H:%M")
         if self.reminder_type == "daily" and self.daily_time:
             return f"每天 {self.daily_time}"
         if self.reminder_type == "weekly" and self.weekly_days and self.daily_time:
diff --git a/bot/scheduler/job_manager.py b/bot/scheduler/job_manager.py
index 8bded49..b84d8a6 100644
--- a/bot/scheduler/job_manager.py
+++ b/bot/scheduler/job_manager.py
@@ -101,7 +101,7 @@ def _build_trigger(reminder: Reminder):
             return None
         run_time = reminder.once_time
         if run_time.tzinfo is None:
-            run_time = SHANGHAI_TZ.localize(run_time)
+            run_time = pytz.utc.localize(run_time)
         if run_time <= datetime.now(timezone.utc).astimezone(SHANGHAI_TZ):
             return None  # already passed
         return DateTrigger(run_date=run_time, timezone=SHANGHAI_TZ)