diff --git a/plugins/message_push_task/main.py b/plugins/message_push_task/main.py
index 40bd326..deb02e9 100644
--- a/plugins/message_push_task/main.py
+++ b/plugins/message_push_task/main.py
@@ -296,12 +296,26 @@ class MessagePushTask(MessagePluginInterface):
             # 解析执行时间
             if recurring_time:
                 try:
-                    hour, minute = map(int, recurring_time.split(':'))
-                except (ValueError, AttributeError):
-                    self.LOG.error(f"无效的执行时间格式: {recurring_time}")
+                    # 处理 timedelta 对象
+                    if isinstance(recurring_time, timedelta):
+                        total_seconds = int(recurring_time.total_seconds())
+                        hour = total_seconds // 3600
+                        minute = (total_seconds % 3600) // 60
+                        second = total_seconds % 60
+                    else:
+                        # 处理字符串格式
+                        time_parts = str(recurring_time).split(':')
+                        if len(time_parts) == 3:
+                            hour, minute, second = map(int, time_parts)
+                        else:
+                            hour, minute = map(int, time_parts)
+                            second = 0
+                except (ValueError, AttributeError) as e:
+                    self.LOG.error(f"无效的执行时间格式: {recurring_time}, 错误: {e}")
                     return None
             else:
                 hour, minute = schedule_time.hour, schedule_time.minute
+                second = 0
 
             # 获取当前时间
             now = datetime.now()
@@ -313,7 +327,7 @@ class MessagePushTask(MessagePluginInterface):
             # 根据重复间隔计算下次执行时间
             if recurring_interval == 'daily':
                 # 每天执行
-                next_time = now.replace(hour=hour, minute=minute, second=0, microsecond=0)
+                next_time = now.replace(hour=hour, minute=minute, second=second, microsecond=0)
                 if next_time <= now:
                     next_time = next_time + timedelta(days=1)
                 
@@ -343,7 +357,7 @@ class MessagePushTask(MessagePluginInterface):
                     else:
                         days_ahead = next_weekday - current_weekday
                     
-                    next_time = now.replace(hour=hour, minute=minute, second=0, microsecond=0) + timedelta(days=days_ahead)
+                    next_time = now.replace(hour=hour, minute=minute, second=second, microsecond=0) + timedelta(days=days_ahead)
                     
                 except (json.JSONDecodeError, ValueError, IndexError) as e:
                     self.LOG.error(f"处理每周执行日失败: {e}")
@@ -374,14 +388,14 @@ class MessagePushTask(MessagePluginInterface):
                     
                     # 处理无效日期（如2月30日）
                     try:
-                        next_time = datetime(next_year, next_month, monthly_day, hour, minute)
+                        next_time = datetime(next_year, next_month, monthly_day, hour, minute, second)
                     except ValueError:
                         # 如果日期无效，使用该月的最后一天
                         if next_month == 12:
                             last_day = 31
                         else:
                             last_day = (datetime(next_year, next_month + 1, 1) - timedelta(days=1)).day
-                        next_time = datetime(next_year, next_month, last_day, hour, minute)
+                        next_time = datetime(next_year, next_month, last_day, hour, minute, second)
                     
                 except Exception as e:
                     self.LOG.error(f"处理每月执行日失败: {e}")