随着科技的发展，计算机网络通信日益发达，但是其通信安全问题也层出不穷，给社会带来了极为恶劣的影 响。数据加密技术在这种局面下应运而生。本文首先对数据加密技术进行了介绍，然后阐述了几种常见的数据加密技术，最 后，分析了数据加密技术在计算机网络通信安全中的应用。

With the development of science and technology, computer network communication is becoming more and more developed, but the communication security problems are also emerging, which have brought about very bad impact on society. Data encryption technology emerges in this situation. This paper firstly introduces the data encryption technology, and then expounds several common data encryption technology, and finally analyzes its application in computer network communication security.