To provide a stocker for a showcase and a showcase using the stocker, which can be simply assembled and disassembled with a small number of parts without welding and using bolts.

The stocker 5 provided on this showcase is at least provided with a floor plate 19, right and left side plates 17, a front frame 15 formed by four-way constructing shape steel, and a door 25 fitted to the front frame 15 to be freely opened and closed. The front frame 15 is provided with a first engagement part 29 mounted on right and left vertical frame materials 27. The right and left side plates 17 are respectively provided with a first engaged part 31 where the first engagement part 29 is locked downward from the upper side, a placing part 45 whose lower end is formed substantially right-angled to the outside of the storing space and which is placed on the top surface of the floor plate 19, and a second engagement part 47 whose lower end is formed substantially right-angled inside the storing space and which is disposed on the lower surface of the floor plate. In the side plate 17, a corner part 48 forming the second engagement part 47 abuts on the side end 50 of the floor plate 19.