Abstract: Using genetic algorithm(GA),the optimal design for cerebellar model articulation controller(CMAC) is first carried out with the limited overshoot. In addition,the proposed method is proved to be effective by the simulation of the wire tension CMAC controller optimal design.The simulation is also compared to the wire optimal PID controller in this paper.This method not only can overcome the too much times by traditional trial-and-error design method, but also is able to obtain optimal control system design.The simulation results show that the proposed design method is more stable and easier than optimal PID.