Deep space exploration is an important direction for human space activities. It is an inevitable way for human beings to understand the mystery of the universe and seek long-term development. It is also an important index of a country's comprehensive strength and the level of scientific and technological development. As one of the key technologies to determine the successof deep space exploration mission, orbit maneuver technology has attracted more and more attention, and has become a research focus. In this paper, the objectives and effects of orbit maneuvers of Chang'e projects in China are briefly described, and the main technological innovations are summarized. On this basis, the future development trend of orbit maneuver technology in China'deep space exploration is prospected.