Abstract: On Dec.14,2013,Chang’e-3 lunar probe successfully landed on the Rainbow Bay area at44.12°N/19.51°W of the moon,then the lunar lander and rover successfully separated and took photos of each other,which achieved the mission objective of our nation’s first soft landing and roving exploration on a celestial body beyond the Earth,and made China the third country achieving lunar soft landing after the UnitedStates and the former SovietUnion.In this paper,based on the briefint roduction of the development process of Chang’e-3 project,the key technologies of the project are summarized