Since 1980s the potentiality of geophysical technologies to solve problems in archaeology and preservation of cultural relics has more and more been acknowledged by archaeologists, workers in preservation of cultural relics and geophysicists. Geophysical technologies have helped in surveying ancient coffin chambers, prospecting the underground civilization of great ancient constructions, and differentiating historic periods for sites and antiquities. In this article, information is given about the application progress of geophysical technologies for archaeology and preservation of cultural relics, by showing survey examples on the Longmen Grottos, Yungang Grottos, Kezier Grottos area, the area of the Imperial Palace, Forbidden City of Beijing, the foundation of the Songyuesi Pagoda, the ancient civilization of the ancient Sizhou City, the Middle Capital of Min Dynasty in Fengyang, etc. -- ICCROM