Abstract:The high temperature and high pressure experiment platform of hydrothermal diamond pressure chamber (HDAC) is a kind of high temperature and high pressure insitu experiment simulation equipment developed on the basis of diamond pressure chamber. In recent years, HDAC technology has made a lot of achievements in the field of geological research, and many important research results have been published by science, nature and other wellknown journals. The structure, composition, experimental advantages and application prospect of HDAC high temperature and high pressure experimental platform have been introduced in this paper.