Abstract:There are three periods in China’s Lunar Exploration Program,"circling round the moon,landing on the moon and returning," among which the program of the first period is the circumlunar exploration program,and its main scientific exploration task is to conduct global,integral and comprehensive scientific exploration,including the following four scientific goals.They are:obtaining global three-dimensional image of the lunar surface;analyzing the distribution characteristics of the chemical element abundance and material types or mineral compositions of the lunar surface;exploring the physical properties of lunar regolith layer;detecting space environment between the earth and the moon.Among these four scientific goals,the obtaining of the numerical map of the whole moon and three-dimensional image map is the key goal,combining with the results of the detection of material composition,the physical properties of lunar regolith layer,and space environment,and this not only can connect rail with the development trend of the international lunar exploration,but also we have our own innovation characteristics.This paper mainly introduces the main achievements of the Chinese Academy of Sciences obtained in China’s Circumlunar Exploration Program.