In virtue of its excellent capability of managing uncertainty systems, robust control is applied to the adaptive optics system controller design, marking a new stage of development. While researchers overseas have done a lot of work, researchers in China are still at the threshold of this field. Existed theses are reviewed to promote research in this regard. It firstly introduces the concept and essence of robust control and sketches the outlines of robust control research at home and abroad in adaptive optics system. It then summarizes the previous research results and discusses several robust control methods in adaptive optics as well as major problems encountered. At last, future perspectives of the robust control used in adaptive optics system are discussed.