To solve the problems that a conventional snowboard stopper device can not be easily detached from a snowboard, the mark of the attaching machine screw of the stopper device remains on the upper surface of the snowboard, the number of components is large, weight is heavy and a structure is complicated further.

The device is turned to the shape of absorbing force just by the part of a step (18) without transmitting the force from a snow surface to a main body in a wedge shape in order to keep the state that the snowboard is not slippery, is turned to a freely attachable and detachable structure and is constituted so as not to leave the mark of the machine screw even when a stopper is detached. Also, the device is made light in weight and miniaturized by being turned to a slide type (Figure 4), a foldable type (Figure 2) and a contraction type (Figure 6).