PURPOSE: To satisfactorily pack an artificial marble counter by using only easily disposable corrugated cardboards without using any conventional blowing styrole.

CONSTITUTION: A plurality of cores 5 and 6 made of laminated corrugated cardboard with U-shaped cross section are fitted over the apron part 1a and the back guard 1b respectively of an artificial marble counter 1 and the side cushion members 7 made of laminated corrugated cardboard are arranged in contact with the longitudinal ends thereof and, in this condition, outer packing boards 2 and 3 are folded to pack the artificial marble counter 1.