To provide a method for installing an object using non-round bar bodies for support legs at high workability and design property in a storage body such as an entrance storage body or the like installed at a site across a step between an entrance floor and an earthen floor in a dwelling house.

This installation method of the entrance storage body A consists of an entrance storage body 1 having a frame part 4 in its lower part and support legs 2, wherein the support legs 2 are no-round bar bodies having attachment projection parts 17 thereon. The attachment projection part 17 at the upper part of the support leg 2 is attached to a hole part 16 of a support leg receiving crosspiece 11 provided at a predetermined position of the frame part 4 at the lower part of the entrance storage body 1 with a predetermined face of the support leg consisting of the non-round bar body abutting on the inner face of the frame part 4 at the lower part of the entrance storage body 1.