The invention discloses a permanent magnet synchronous motor direct torque control method based on model predictive control, and belongs to the technical field of control. The invention aims to provide the manent magnet synchronous motor direct torque control method based on model predictive control, wherein by means of an electric vehicle wheel hub motor drive control method based on extended Kalman estimation and model predictive control, the defects in the prior art can be well overcome. According to the permanent magnet synchronous motor direct torque control method based on model predictive control, firstly, an extended Kalman principle is used for completing motor drive system estimator designing, secondly, torque and flux linkage values obtained by the estimator are used as feedbackvalues which are transferred to a motor control system controller along with reference set values, and finally, by solving an optimum control problem corresponding to a target function, fast accuratetracking control of motor torque and flux linkage is completed by the system. By means of the permanent magnet synchronous motor direct torque control method based on model predictive control, the problems of complex coordinate change and current magnitude coupling in a motor model are effectively solved, the system complexity is reduced, and dynamic response speed of the system and the intuitionism and the reliability of a system control effect are improved.