To provide a rear suspension device for vehicle capable of increasing the maneuverability of a vehicle by increasing a responsiveness to steering in turning of the vehicle.

A wheel 11 is supportedly fitted to the base end part 14 of a lower arm 13 through a wheel support member 12 so as to be swingable to a body side about an axis passing through the tip parts 15 thereof in fork shape. A shock absorber 20 is disposed aslant between the lower arm 13 and a chassis cross member 17 so that a force is given to the outside wheel 11 in toe-in direction when a vehicle starts a swing and a coiled spring 23 is extended and retracted by the rolling of the body.