diff --git a/commands/handlers.py b/commands/handlers.py
index b183db0..4f2d057 100644
--- a/commands/handlers.py
+++ b/commands/handlers.py
@@ -693,17 +693,36 @@ def handle_reminder(ctx: 'MessageContext', match: Optional[Match]) -> bool:
                 validation_error = "提醒内容太短"
             else:
                 # 验证时间格式
-                try:
-                    if data["type"] == "once":
-                        dt = datetime.strptime(data["time"], "%Y-%m-%d %H:%M")
-                        if dt < datetime.now():
-                             validation_error = f"时间 ({data['time']}) 必须是未来的时间"
-                    elif data["type"] in ["daily", "weekly"]:
-                         datetime.strptime(data["time"], "%H:%M") # 仅校验格式
+                time_value = data.get("time", "")
+                if data["type"] == "once":
+                    parsed_dt = None
+                    for fmt in ("%Y-%m-%d %H:%M", "%Y-%m-%d %H:%M:%S"):
+                        try:
+                            parsed_dt = datetime.strptime(time_value, fmt)
+                            break
+                        except ValueError:
+                            continue
+                    if not parsed_dt:
+                        validation_error = f"时间格式错误 ({time_value})"
+                    elif parsed_dt < datetime.now():
+                        validation_error = f"时间 ({time_value}) 必须是未来的时间"
                     else:
-                         validation_error = f"不支持的提醒类型: {data.get('type')}"
-                except ValueError:
-                     validation_error = f"时间格式错误 ({data.get('time', '')})"
+                        # 统一存储格式为分钟精度，避免比较时出错
+                        data["time"] = parsed_dt.strftime("%Y-%m-%d %H:%M")
+                elif data["type"] in ["daily", "weekly"]:
+                    parsed_time = None
+                    for fmt in ("%H:%M", "%H:%M:%S"):
+                        try:
+                            parsed_time = datetime.strptime(time_value, fmt)
+                            break
+                        except ValueError:
+                            continue
+                    if not parsed_time:
+                        validation_error = f"时间格式错误 ({time_value})"
+                    else:
+                        data["time"] = parsed_time.strftime("%H:%M")
+                else:
+                    validation_error = f"不支持的提醒类型: {data.get('type')}"
 
                 # 验证周提醒 (如果类型是 weekly 且无验证错误)
                 if not validation_error and data["type"] == "weekly":
diff --git a/function/func_reminder.py b/function/func_reminder.py
index 5767736..f2f1dbc 100644
--- a/function/func_reminder.py
+++ b/function/func_reminder.py
@@ -118,21 +118,47 @@ class ReminderManager:
 
         # 进一步校验时间格式 (根据类型)
         weekday_val = None # 初始化 weekday
-        try:
-            if data["type"] == "once":
-                # 尝试解析，确保格式正确，并且是未来的时间
-                trigger_dt = datetime.strptime(data["time"], "%Y-%m-%d %H:%M")
-                if trigger_dt <= datetime.now():
-                     return False, f"一次性提醒时间 ({data['time']}) 必须是未来的时间"
-            elif data["type"] == "daily":
-                datetime.strptime(data["time"], "%H:%M") # 只校验格式
-            elif data["type"] == "weekly":
-                datetime.strptime(data["time"], "%H:%M") # 校验时间格式
-                if "weekday" not in data or not isinstance(data["weekday"], int) or not (0 <= data["weekday"] <= 6):
-                    return False, "每周提醒必须提供有效的 weekday 字段 (0-6)"
-                weekday_val = data["weekday"] # 获取 weekday 值
-        except ValueError as e:
-             return False, f"时间格式错误 ({data['time']})，需要 'YYYY-MM-DD HH:MM' (once) 或 'HH:MM' (daily/weekly): {e}"
+        time_value = data.get("time", "")
+        if data["type"] == "once":
+            # 尝试解析，确保格式正确，并且是未来的时间
+            trigger_dt = None
+            for fmt in ("%Y-%m-%d %H:%M", "%Y-%m-%d %H:%M:%S"):
+                try:
+                    trigger_dt = datetime.strptime(time_value, fmt)
+                    break
+                except ValueError:
+                    continue
+            if not trigger_dt:
+                return False, f"一次性提醒时间格式错误 ({time_value})，需要 'YYYY-MM-DD HH:MM' 或 'YYYY-MM-DD HH:MM:SS'"
+            if trigger_dt <= datetime.now():
+                return False, f"一次性提醒时间 ({time_value}) 必须是未来的时间"
+            # 统一保存为分钟精度
+            data["time"] = trigger_dt.strftime("%Y-%m-%d %H:%M")
+        elif data["type"] == "daily":
+            parsed_time = None
+            for fmt in ("%H:%M", "%H:%M:%S"):
+                try:
+                    parsed_time = datetime.strptime(time_value, fmt)
+                    break
+                except ValueError:
+                    continue
+            if not parsed_time:
+                return False, f"每日提醒时间格式错误 ({time_value})，需要 'HH:MM' 或 'HH:MM:SS'"
+            data["time"] = parsed_time.strftime("%H:%M")
+        elif data["type"] == "weekly":
+            parsed_time = None
+            for fmt in ("%H:%M", "%H:%M:%S"):
+                try:
+                    parsed_time = datetime.strptime(time_value, fmt)
+                    break
+                except ValueError:
+                    continue
+            if not parsed_time:
+                return False, f"每周提醒时间格式错误 ({time_value})，需要 'HH:MM' 或 'HH:MM:SS'"
+            data["time"] = parsed_time.strftime("%H:%M")
+            if "weekday" not in data or not isinstance(data["weekday"], int) or not (0 <= data["weekday"] <= 6):
+                return False, "每周提醒必须提供有效的 weekday 字段 (0-6)"
+            weekday_val = data["weekday"] # 获取 weekday 值
 
         # 准备插入数据库
         sql = """
@@ -395,4 +421,4 @@ class ReminderManager:
             return False, f"删除提醒时发生数据库错误: {e}", 0
         except Exception as e:
             logger.error(f"用户 {wxid} 删除所有提醒时发生意外错误: {e}", exc_info=True)
-            return False, f"删除提醒时发生未知错误: {e}", 0 
\ No newline at end of file
+            return False, f"删除提醒时发生未知错误: {e}", 0