Exploring the chemical composition of materials on the surface of the moon and planets is the key to research its origin and evolution history. Spectral detection technology is the major methods of material composition recognition and quantitative inversion. In-Situ spectral detection is different from remote sensing and sampling return detection, it refers to the short distance spectral detection performed at the target site. The lunar science research and resource exploration of "Chang''e-3 "mission need to implement the first In-Situ spectral detection technology on the lunar surface, by breaking through the key technologies of the new acousto-optic spectroscopic detection of staring time series scanning, we have developed high-performance, light and small, highly reliable instruments, adapted to the harsh surface environment, and become the first in the world to realize In-Situ spectral detection and analysis on the lunar surface of the moon. The paper takes "Chang''e-3 and 4" as typical applications, and introduces the In-Situ spectral detection technology of the lunar surface, including detection mechanism, working mode and the function, performance and application of the instrument; Finally, the "Chang''e-5" lunar mineral spectrometer was introduced which will be applied soon.