To allow coping with unevenness, a gap, inclination or the like of a snow surface by pivotally mounting flexure by one side of a plate on a ski, movably providing the other side, and bending the ski in a state that the plate is always flat, to improve rigidity of the ski, and to perform damage prevention or the like while relaxing a shock at the time, in a structure provided with a binding-installing plate on the ski.

This snowboard includes: a board; the plate mounted on the upper surface thereof, and including a plurality of binding-installing holes on the front and rear sides; and the binding provided on the front and rear sides in the longitudinal direction of the plate. The one side of the plate is pivotally supported to the board, the other side is movably supported to the board, and the flexure of the board can be carried to the plate. Installation devices each projectingly provided with a plurality of threaded tubes inserted into the plurality of holes can be installed from below the plate.