Abstract: Wireless sensor network，which is made by the convergence of micro-electro-mechanism system，wireless communication and modern networks technologies，is a novel technology about acquiring and processing information.The communication protocol of WSN face many challenge.Firstly，the concepts and characteristics of the WSN are introduced，and the possible of WSN protocol model is put forward in the paper.Then，a careful analysis every of the lay of protocol model is made under the new communication protocol of WSN.It provides the necessary theoretical foundation for further study WSN communication protocol.

摘要： 集成了微机电系统、无线通信和现代网络等多项技术而形成的无线传感器网络是一种全新的信息获取和处理模式，其通信协议研究面临许多新的挑战。描述了WSN的性能特征；提出了可能的WSN通信协议分层模型；并在新的通信协议模型下，对协议中的各个层次功能进行了深入地分析。为进一步研究WSN通信协议提供了必要的理论基础。