PURPOSE: To improve the effect of brake on the deep snow or frozen ski slope by mounting a braking device inside or outside the board for snowboarding and the ski.

CONSTITUTION: A part 2 is provided to present the effect of brake with the resistance of snow while being jumped out of a board 1 for snowboarding to the outside by a gear. Then, a gear 4 is operated by moving to right and left with a board 3 at the upper part of snow board. A ski shoe is fixed on a board 1 to be moved to right and left, when a foot is moved in a direction to curve, centrifugal force is operated, the board 2 inside resisting snow is putted out by moving a ski 3 at the upper part so that the break effect can be extremely improved. Thus, a user can stop on the snow as well and since the brake effect is improved, accidents on the ski slope caused by high speed can be prevented.