PURPOSE: To provide a packing case which can be easily assembled and also can be recycled insofar as strength of its material permits.

CONSTITUTION: A packing case for cans comprises a bottom 1 maintaining an area where at least four cans can be mounted, a pair of side parts 4, 5 connected via fold lines 2, 3 on both lateral sides of the bottom 1, a pair of upper face parts 11, 12 connected via fold lines 9, 10 to the respective side parts 4, 5, a fixing piece 13 formed on at least one of the upper faces, and a fixing hole formed on at least the other upper face. The fixing piece and fixing hole coincide with each other when both upper face parts are stacked, while a fold line 14 formed on a side of the fixing piece is folded and fitted into the fixing hole.