PURPOSE: To provide vaulting box frame members, which are vertically stacked to each other stepwise, simply and easily carried for storing or using and do not occupy spaces for storing.

CONSTITUTION: This vaulting box 1 is separably constructed by vertically stacking plural frame members 2, 3, 4 stepwise. A middle frame member 3 is made possible to be stored in a bottom frame member 2 vertically neighboring, and a top frame member 4 in the middle frame member 3 orderly. The top face of the top frame member 4 is formed with a mat member 5. The front part 51, about 1/3 portions, in the front rear direction of the mat member 5 is colored differently from the rear part 52 and hand marks 53 are marked in the front part 51 area.