To properly limit the rolling of a vehicle and to simultaneously perform proper following-up even on a rough road.

A suspension device is provided with a car speed detecting means 2 for detecting the car speed of a vehicle 1, a steering angular speed detecting means 3 for detecting the rotational angular speed of a steering, a control map storage means for storing a control map for selecting the attenuating force of a suspension device 1a corresponding to a detected value detected from these detecting means and a main control part for selectively controlling the attenuating force of the suspension device 1a. In this case, a G sensor for detecting acceleration in the upper and lower directions of the vehicle 1 is provided in the suspension device 1a and an attenuating force reduction control function for reducing the attenuating force of the suspension device 1a by the main control part is provided.