Abstract: The current Network Management System（NMS） has the following problems：lack of monitor and management of network flow；lack of value-added service function，such as security，counting and network optimization；not supporting the analysis of high layer network management businesses demanded by network administrators and high-level managers.This paper designs a new network flow analysis system（FlowMonitor） to promote NMS and to solve the deficiencies of the conventional NMS.Focusing on the high layer requirements in network management，FlowMonitor can satisfies users’ demands for analysis of using status，security defense and counting model based on the network flow.

摘要： 现有的网络管理系统普遍存在以下问题：一是缺乏对用户用量、用法的监控和管理；二是缺乏对安全、计费、网络优化等应有的增值服务功能；三是不支持网络管理员和高级经理对网络管理高层次业务需求分析。设计的网络流量分析系统作为对网络管理系统的有力补充和提升，解决了常规网管系统的缺陷，直接从网络管理高层次需求入手，满足客户对网络使用状况分析、网络安全防卫、基于用量的计费模式等需求。