The invention discloses a household garbage sorting machine. The household garbage sorting machine comprises a box body. A control switch is arranged on one side of the box body; a dust storage box is arranged on one side of the box body; a sorting barrel is arranged on the upper side of the box body; two end covers are symmetrically distributed on two sides of the sorting barrel by bolt connection; an output shaft of a servo motor is connected to one end of a rotary shaft through a coupling; a second V-shaped belt wheel is arranged in the middle position of the rotary shaft; a first V-shaped belt wheel is arranged on one side, close to the second V-shaped belt wheel, of the box body; garbage can be continuously sorted by matched use of the servo motor, a V-shaped belt, the first V-shaped belt wheel, a first sorting bar, a second V-shaped belt wheel and a second sorting bar, so that the sorting efficiency is increased greatly. A magnetic extractor can effectively sort and recycle a metal product. Interference of dust in household garbage can be removed by means of a design of a fan blade and the dust storage box.