%A SI Liming, XU Haoyang, DONG Lin, LV Xin %T Terahertz technology hot spots in 2020: A review %0 Journal Article %D 2021 %J Science & Technology Review %R 10.3981/j.issn.1000-7857.2021.01.017 %P 201-211 %V 39 %N 1 %U {http://www.kjdb.org/CN/abstract/article_16122.shtml} %8 2021-01-13 %X In 2020, terahertz science and technology made a series of breakthroughs in the fields of radiation source, detector, 5G/6G communication, medical, agriculture, security inspection, military, etc. These achievements are playing a positive role in promoting engineering application and industrialization of terahertz. In this paper, key hotspots of terahertz science and technology, including 6G communication, terahertz medical erahertz military application, are summarized and their development trends are prospected.