Bumpy-road driving state of a vehicle (11) during driving is correctly grasped by computing from an output signal (ωp) of a roll angular velocity sensor (2) for detecting the angular velocity about a roll axis (B) of the vehicle (11) and an output signal (V) of a vehicle speed sensor (1), and the suspension control apparatus continues to control the damping force of the shockabsorbers (3,4) after the bumpy-road driving has been finished, in order to enlarge the road contact area of the tyre and improve the ride comfort and driving stability of the vehicle.