To provide a rotating accommodating box in which, when rotating the accommodating box till a tilting position where a previously established tilting angle in the forward direction is regulated, an accommodating thing is stably held and taking in and out.

In the rotating accommodating boxes 10a and 10b which are rotatably supported between a horizontal position and a tilting position by a first support member 18 and a second support member 20 which are arranged between right and left side walls 4b of an accommodating shelf, the first support member 18 regulates rotation exceeding the tilting range of the accommodating boxes 10a and 10b and has a function of stably holding this accommodating boxes 10a and 10b at the tilting position.