A suspension device includes a damper having an extension-side chamber and a contraction-side chamber, an air spring that exerts a resilient force in a direction in which the damper is extended, and a control part that independently adjusts the pressures of the extension-side chamber and the contraction-side chamber to control a force exerted by the damper. The control part makes the damper exert a balancing force against the resilient force of the air spring in a predetermined stroke range of the air spring.