The subject innovation is and by being installed with the multi-stage impact plate facing down to its original position by its own weight fills these impact plate with feet, is returned to the original state without shaking even if the car the impact plate with feet to exactly hit the spots when the group following the departure also as striking plates on a kicking exercise for for Taekwondo to be a two-stage three-shot next to the installed in multiple stages at the same time, in particular the pair of supporting plates having a certain angle to both sides took place from the center is provided with a plurality of formed in the main body in multiple stages, stopper the front end of the rotatably engaged with each supporting plate lever is equipped plate blow being moved inclined by its own weight to the lower side from the upper side by a flared angle of the support plate, it is connected via a respective lever and the ball joint formed on each of the support plate as sandwiched moved together with the lever in the It consists of a guide shaft for restricting the moving distance of the impact plate.
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