Outdoor die-casting aluminum box body

The utility model belongs to the field of die-casting aluminum box bodies, and discloses an outdoor die-casting aluminum box body which is used for solving the problem that an existing outdoor die-casting aluminum box body does not have an arc-shaped splicing function. The device comprises a plurality of mounting boxes and connecting pieces for fixing the adjacent mounting boxes, the top of each mounting box is of an isosceles trapezoid structure in a top plan view, a storage channel is formed in the front end face of each mounting box, the top of each storage channel is of an isosceles trapezoid in a top plan view, and first connecting holes are formed in the inner walls of the two sides of each storage channel; the connecting piece comprises an I-shaped vertical plate, connecting plates are rotationally connected to the two side walls of the vertical plate, second connecting holes matched with the first connecting holes are formed in the connecting plates, and fixing cylinders with arc-shaped top sections a