Abstract: A vehicle parking device includes a base with four posts extending therefrom and every two adjacent of the posts have two rails connected therebetween on which three first parking units are moved. Each of the posts has a first sprocket mounted thereto and two first parking units movable on the rails and three second parking units movably located between any two adjacent posts. Each of the second parking units has two sprockets mounted to the rear end thereof so that a cable, which has one end thereof fixedly connected to one of two outermost post and the other end thereof engaged with a motor mounted to the other outermost post, reeved through the first sprockets and the second sprockets such that each of the second parking units are moved vertically between the two posts corresponding thereto.