太赫兹通信是一个极具应用前景的技术，太赫兹波有非常宽的还没分配的频带，并且具有传输速率高、方向性好、安全性高、散射小及穿透性好等许多特性。发展太赫兹通信技术已成为各发达国家研究的热点。该文分析了国内外太赫兹通信的研究情况；以太赫兹通信系统的整体框架，全面地介绍和分析了太赫兹通信的一些关键技术和最新研究成果；同时，对太赫兹的技术发展趋势和应用前景做了展望，提出了太赫兹技术的发展战略。

Terahertz technology has great potential application; terahertz wave has broad\|band which isn’t occupied. It has following features: higher data transfer rate，good direction, higher safety, lower scatter, higher transmittance and so on. Terahertz technology is becoming a research focus in communication field in developed countries. The paper introduces several key technologies and analyses latest achievement, basing on the framework of terahertz communication. At the same time, the paper foretells developing trend and application prospect and put forward the terahertz development strategy.