The invention relates to the technical field of trash classification, and specifically relates to a trash classification device comprising a box body. The inner portion of the box body is divided intoa front cavity, a rear cavity, an air inlet cavity and a post processing cavity through built-in partition plates. A cover plate is fixedly installed at the upper end of the box body through a rotating shaft. The trash classification device has the beneficial effects that by means of the trash classification device, solid trash and waste liquid can be effectively classified through a turnover classification device, the solid trash is collected through a solid trash collection box, the waste liquid is collected through a liquid collection device, and therefore the classification efficiency ofthe trash is improved, and subsequent processing of the trash is facilitated; and by means of the device, drying processing of the solid trash can be effectively achieved, and therefore the phenomenonthat the environment is influenced by odor caused by rot is effectively avoided, the air quality is effectively improved, the life comfort is ensured, and labor burdens on cleaning staff are reduced.