Aiming at the problems of highorder non linearity and load disturbance of permanent magnet synchronous motor (PMSM), a discrete speed regulation control method based on dynamic surface control (DSC), fuzzy logic system (FLS) and backstepping was proposed. The continuous model of PMSMs was discretized by Euler formula. DSC was used to overcome the “explosion of complexity” problem which emerged in classical backstepping by processing the virtual control function in every subsystem. FLS was used to approximate the nonlinearities of the system. The simulation results showed that the proposed controllers could regulate the speed effectively and exhibited strong robustness against load disturbance.