The automatic leveling system of an aerial working platform has the problems of long adjustment time and slow response speed.In order to improve the performance of general position followup system, a conventional PID control algorithm was designed according to the large damping characteristics of the system. A set of better control parameters was obtained through simulation experiment.The response speed ability of the system was improved by taking advantage of these parameters, but the system also had defects of excessive overshoot.In order to further optimize the system, a fuzzy PID controller was designed by combined fuzzy control with PID control. The simulation results show that the adjustment time and overshoot of the system are obviously optimized using this fuzzy PID controller