In order to overcome the shortcomings of traditional PMSM vector control system such as poor stability, poor robustness and easily external perturbation and disturbance and so on, this paper proposes a PMSM vector control system based on fuzzy sliding mode variable structure, designing the rotating speed regulator by fuzzy sliding mode variable structure control method and makes simulating under Simulink. Simulation results show that PMSM vector control system based on fuzzy sliding mode variable structure control has good systematic dynamic and stability and stronger robustness under external perturbation.