中文摘要：

BitTorrent是目前的P2P应用中最受欢迎的杀手级软件，它最大的成功在于满足BitTorrent用户快速的共享文件的同时使用TFT机制和最少片优先的原则有效的抑制了搭便车行为的产生．目前，很多研究者都关注BitTorrent性能改进方面，本文对从2002年到2010年关于BitTorrent网络行为研究的文献进行了调研和总结，介绍了它的性能研究现状，分析了BitTorrent网络的行为建模和仿真，流量特征，拓扑演化规律等，试图为关注BitTorrent网络发展的研究者提供参考，并对下一步BitTorrent网络行为学的研究提出了建议和展望．

英文摘要：

BitTorrent is the most popular killer application in the existing peer-to-peer application. Its greatest success is BitTorrent us- er can share file rapidly, while using the Tit-for-Tat mechanism and the rarest first principle can effectively restrain the free-riding gen- eration. At present, several reseachers focus on the BitTorrent＇s performance improvement. In this paper,we present a survey of BitT- orrent network behavior studies from 2002 to 2010. We introduce its current performance studies, analyze its behavior modeling and simulation, traffic characteristic, topological evolution regular and so on, try to provide reference to researcher who pay their attention to the development of BitTorrent network,and give some advise and perspective to the further research on the BitTorrent network be- havior.