In order to improve the torque tracking accuracy of the electrohydraulic disc brake of electric vehicle and reduce the energy consumption in driving,the model predictive control method was adopted,and the control output was simulated and verified.A sketch model of electrohydraulic disc brake for electric vehicle was established.The motor torque equation was deduced according to the first order discretization model.The wheel slip mechanics equation was discretized by uding integral discretization,and the spatial expression of vehicle slip rate was deduced.The model predictive control system was designed,and the antiinterference ability of the control system was enhanced by using integral action.The stability of the control system was proved by using Lyapunov function.The control effect of the electrohydraulic disc brake of electric vehicle was simulated by using MATLAB software,and compared with that of cascade PI control.The results show that with the cascade PI control,the response speed of the electrohydraulic disc brake control system is slower,the tracking error of the wheel torque and slip rate is larger,and the power consumption is larger;with the model predictive control,the response speed of the electrohydraulic disc brake control system is faster,the tracking error of the wheel torque and slip rate is smaller,and the power consumption is less.The model predictive control system is used in the electrohydraulic disc brake of electric vehicle,which can improve the output accuracy of the control system and recover more energy.