Hyper-spectral remote sensing as new science and technology, is gradually applied to various fields. The technology has the technical advantages which are the high spectral resolution and non-destructive detection. These provide a new perspective for the research and protection of cultural relics. This paper firstly described the basic principles of hyper-spectral technology and its advantages, then stated the main applications of the technology in the conservation work, and at last, briefly summarized its limitations and potential applications.