无线传感器网络的飞速发展，带来了更多的安全性问题，通信方面的安全性问题尤为突出。由于无线传感器网络和传统网络不同，使得以往的安全机制和协议难以直接应用，因此面临更大的挑战。本文章分析了无线传感器网络的通信安全问题，并对现有的关键技术进行了讨论。

The rapid development of wireless sensor network brings more security problems, especially the security of communication.Because of the difference between wireless sensor network and traditional network, it is difficult to apply the security mechanism and protocol directly, so it faces more challenges. This paper analyzes the communication security problems of wireless sensor networks, and discusses on the key technologies.