网络流量监测是网络性能分析和网络规划设计的基础。随着网络技术的飞速发展，如何管理网络中的各种不同设备变得尤其重要。本文介绍了一种流量监测系统，它不仅能监测设备和网络的运行状况，提供告警信息和报表分析，还能向数据业务用户提供用户关心的流量数据，该系统是上海电信的核心网管系统，使用Java 语言实现。关键词简单网络管理协议，管理信息库，协议数据单元，Spring 对象关系映射Abstract Network flowing inspect is the base of analyze network capability and design ofcommunicating network. With the rapid development of network technology, How to managevarious network devices becomes very important. This article introduces a system that is a core network manage system of Shanghai telecom implement with Java language. It can inspect function status of network device, provide alarm information and report analysis and flowing datathat operation user cares about.