diff --git a/plugins/message_push_task/main.py b/plugins/message_push_task/main.py
index fc3831a..72ef067 100644
--- a/plugins/message_push_task/main.py
+++ b/plugins/message_push_task/main.py
@@ -5,6 +5,7 @@ from loguru import logger
 
 from base.plugin_common.message_plugin_interface import MessagePluginInterface
 from base.plugin_common.plugin_interface import PluginStatus
+from db.connection import DBConnectionManager
 from db.task_db import TaskDBOperator
 from utils.decorator.async_job import async_job
 from utils.decorator.plugin_decorators import plugin_stats_decorator
@@ -55,17 +56,17 @@ class MessagePushTask(MessagePluginInterface):
 
         # 保存上下文对象
         self.event_system = context.get("event_system")
-        self.db_manager = context.get("db_manager")
 
+        self.db_manager = DBConnectionManager.get_instance()
         # 初始化组件
         self.db = TaskDBOperator(self.db_manager)
 
-        async_job.every_seconds(5)(self.process_scheduled_tasks)
         # 初始化数据库表
         if not self.db.init_tables():
             self.LOG.error("初始化数据库表失败")
             return False
 
+        async_job.every_seconds(5)(self.process_scheduled_tasks)
         # 加载配置
         self._commands = self._config.get("MessagePush", {}).get("command", ["推送", "消息推送"])
         self.command_format = self._config.get("MessagePush", {}).get("command-format", "推送 消息内容")
@@ -242,7 +243,7 @@ class MessagePushTask(MessagePluginInterface):
             self.LOG.error(f"处理定时任务出错: {e}")
 
     def _calculate_next_schedule_time(self, current_time: datetime, interval: str, end_time: datetime = None) -> \
-    Optional[datetime]:
+            Optional[datetime]:
         """计算下次执行时间
         
         Args: