The invention provides a semi-physical simulation platform and a semi-physical simulation control method of an electromobile, and belongs to the technical field of electromobile simulation and control. The semi-physical simulation platform mainly comprises a host machine, a target machine, a simulator, a hardware controller and a data acquisition card. The platform realizes a hardware-in-loop simulation system based on Matlab/SimulinkxPCTarget two-machine communication by taking a real-time simulation system xPCTarget as a core, accessing the hardware controller and the like. At the same time, the platform overcomes the disadvantages that the traditional research method gives first place to software simulation, vehicle model parameters, working conditions and control strategies are relatively ideal, a degree of confidence is limited and the like; the simulation data reliability is improved; a development process of software and hardware of an active safety controller is accelerated; and the research and development fund and cost are saved.