Terahertz science and technology is increasingly emphasized in science and industry,and has progressed significantly in recent years.There is an important aspect of attention in the application of terahertz technology to medicine.The overview of the terahertz characters,terahertz spectroscopy and terahertz imaging technology is introduced.This paper focuses on reviewing the use of and research progress in terahertz spectroscopy and terahertz imaging technology in medical testing and diagnosis.Furthermore,the problems to be solved and development directions of terahertz spectroscopy and terahertz imaging technology are discussed.%近年来太赫兹科学技术日益受到科学界和工业界的重视并得到了较大的发展,太赫兹技术在医学领域上的应用已成为人们关注的重要方面之一.介绍了太赫兹波的特点、太赫兹光谱和成像技术；重点讨论了近年来太赫兹光谱和成像技术在医学检测和诊断领域中的应用和研究进展；并探讨了太赫兹光谱和成像技术发展中需要解决的问题以及今后发展的方向.
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