Facing the increasingly serious environmental pollution and oil crisis, the development of automobile industry is facing a very serious challenge. For the sustainable development of automobile industry, the electric vehicle using motor as driving equipment can realize "pollution-free", which has become the focus of automobile research and development in many countries. In the research and development of electric vehicles, the electric vehicles driven by electric wheels have attracted the attention of all walks of life because of their ideal control characteristics and broad application prospects. In this paper, the electric wheel drive vehicle as the research object, the electromechanical composite brake control system is studied and analyzed.