Mainly engaged in research work in institutional and robotics. The Liqun Lie algebra analysis method of spatial elastic mechanism based on geometrically precise beam is proposed, the multi-legged robot motion analysis theory based on the principle of metamorphic mechanism is established, and the metamorphic mechanism device for spacecraft door door switch operation and large flexible solar wing socket are invented Type spreading mechanism device, hexapod-legged mobile operating robot, multi-rotor dual-arm flying operating robot, etc. As the person in charge, he has undertaken more than 20 projects at the national, provincial and ministerial levels, and corporate cooperation. Published 200 academic papers, 1 monograph, and 4 co-authors. Authorized more than 50 national invention patents, many of which were applied in national aerospace major model projects, and won 1 second prize of national technological invention