In order to solve the problems of the traditional threevector model predictive control strategy, such as large calculation amount of vector selection, complicated calculation of operation time of each vector and large common mode voltage, a multi-vector model predictive current control strategy is proposed. Firstly, to solve the problem of large common-mode voltage, it is proposed to replace traditional zero vector with effective voltage vector synthesis, and use voltage vector selection table and voltage vector position angle to quickly select vectors and reduce the calculation amount of vector selection. Secondly, voltage error duty cycle is adopted to simplify the calculation of the operation time of each vector. Finally, its effectiveness is verified by simulation and physical platform. It is proved that the control algorithm can improve the steady-state performance of the system and restrain the influence of large common mode voltage on the motor.