The permanent magnet synchronous motor (PMSM) is popularly used in many application fields for such advantages as having the speed-torque characteristics similar to that of a DC motor. Nevertheless, the overall performance of the PMSM is largely dependent on that of the control system. The classical PID controller, which has acquired wide applications in many fields, is only suitable for the design of the linear system and cannot meet the requirements of the nonlinear system like the PMSM. In this paper, a compound control system combining the classical PID control and the fuzzy control is presented to meet the requirements of control system. Simulation results show that the fuzzy PI controller has better performance than that of the classical PI controller.