Abstract:The protection of cultural relics is relative to the destruction. Only by taking different methods to prevent the destruction of different ways can the effect of protection be achieved, which is an important content of the protection of cultural relics. There are many reasons for the destruction of cultural relics, which can be summed up as man-made destruction and natural destruction. Prevent the nature destruction ,the main adopted is to use a series of science and technology to solve. In this asia-pacific historical and cultural heritage conservation conference, participants from various countries discussed the general principles of ancient building restoration and the application of new materials and technologies in the restoration work.