Abstract: Based on the fuzzy control principle and adaptive scheme, combining the fuzzy system identification with the fuzzy control, a new kind of controller for vehicle semi-active suspension is proposed, which makes the controller performance better by readjusting the fuzzy control rules on-line, and the controller real-time performance is improved also by mending the algorithm. As compared with general parameter adaptation,it has strong adaptation and robustness. The controller real-time performance is improved. It will be of a certain application value to engineering application.