Aiming at the harmonic problem of stator phase current in the vector control system of a dual three-phase permanent magnet synchronous motor (PMSM), a magnetic field oriented control strategy based on the space vector pulse width modulation (SVPWM) algorithm with the maximum four-vector is proposed on the basis of using a conventional two-vector SVPWM algorithm. Secondly, to solve the problem of large computation and complex design of the SVPWM algorithm with maximum four vectors, an improved magnetic field oriented control strategy based on the SVPWM algorithm with virtual voltage vector is proposed. Finally, the effectiveness of the proposed improved control algorithm strategy is verified by MATLAB/Simulink simulation platform.