To enable wide snow boards to be firmly held in place to enable snow boards of any shapes to be firmly clamped, and to make very easy the work of applying wax to and that of preparing the sliding surfaces of the snow boards.

A clamp 3 is provided near one end of the top of a base 2 installed on each end, etc., of the upper surface of a maintenance stand, and a movable clamp 4 for clamping a snow board A in a horizontal position between it and the fixed clamp 3 is supported on the other end of the base 2 in such a way that it can move freely toward the fixed clamp 3, and sandwiching grooves 12, for sandwiching each end of a sliding-oblong-hole- equipped plate H that is freely slidably mounted by means of wing nuts F or the like in tapped holes bored at appropriate intervals in each end of the upper surface of the snow board A in order to fix a plurality of boot-attaching bindings, are provided in the tops of the insides of the fixed and movable clamps 3, 4 in such way as to be both oriented inward. Further, a movable clamp 8 for clamping the snow board A held in a vertical position between it and the fixed clamp 3 is supported on one end of the base 2 in such a way as to freely move toward the fixed clamp 3.