To laminate plural containing boxes in a vertical direction by providing surrounding material projected on the upper surface of the top plate of a first containing box and also providing an engagement hole with which the surrounding materials are engaged in the base plate of the second containing box to be laminated on the upper part of the first containing box.

A system containing body consists of the plural containing boxes 11 such as a shoe box and a containing shelf, etc. The containing boxes 11 are provided with side plates at both sides and a rear side and also with doors 12 which are opened and closed on the front surfaces, and a top plate 13 is providing with the surrounding materials 14-16 at three sides. The surrounding materials 14 is formed by bending prescribed length at the both sides of an iron bar by 90° and female screws 18 are provided in bending end parts 17. The top plate 13 is provided with fitting holes 19 with which the bending end parts 17 at the both sides of the surrounding materials 14-16 are engaged. On the base plate 17a of the containing box 11, the engagement holes 22-24 with which the surrounding materials 14-16 which are provided in the upper part of another containing box 11 with a same shape are engaged are provided.