Aiming at the nonlinear, strong coupling and timevarying characteristics of permanent magnet synchronous motor and the traditional PID control strategy can't follow the change of system parameters and automatically make the corresponding setting. Through the analysis of fuzzy control, this paper puts forward a simple and practical control strategy of permanent magnet synchronous motor, namely fuzzy PID selftuning SVPWM control. Adopt the method of SVPWM produce three phase current drive motor, the fuzzy control rule was established based on fuzzy logic statements, and combined with PID control parameters, realtime change motor control parameters of the function, and using Matlab tools to establish the fuzzy selftuning PID SVPWM closedloop vector control system simulation model.The simulation results show that the system speed to realize no overshoot, response speed and disturbance recovery time shortened by half compared with the traditional PID control method. The method to improve the control precision of the permanent magnet ac servo system, has a good dynamic and static performance, on the engineering application provides a simple and easy to realize the control method.