Abstract: The adaptive controller is used to improve performances of active suspensions of vehicle to get comfortable ride and steady control of vehicle. According to the results of the entitative experiments of active suspensions, the adaptive control system has characteristics of eliminating vibration of vehicle under different stimulations. For active suspensions of vehicle, the adaptive control has the characteristics such as original design and good practicability. Particularly, this method is fitter for vehicles requiring antiviberation to a higher degree.