The invention relates to logistics sorting equipment, in particular to an automatic sorting machine of box-packed articles. The automatic sorting machine comprises a stand (1), an article storage tank (9), a sorting mechanism (10), a sliding baffle mechanism, a conveyor (7), an electric control cabinet (8) and a shell shield plate (2). The automatic sorting machine is characterized in that the article storage tank (9) includes two half tank bodies folded into the shape of a right angle, wherein the sections of the two half tank bodies are in mirror lateral symmetry, and the two half tank bodies are arrayed in parallel and form side rake angles with a horizontal plane; the high ends of the tank bodies form side rake angles beta with the horizontal plane, and the low ends of the same form side rake angles alpha with the horizontal plane; the low end of the article storage tank (9) is provided with the sorting mechanism (10); and the conveyor (7) is arranged below the sorting mechanism (10). The invention has high sorting efficiency because a sorting device adopts a completely parallel sorting mode and is especially suitable for multi-kind large-scale sorting occasions; in addition, the invention adopts an electromagnet as the power of the sorting mechanism (10) and has simple structure, low power and failure rate and reliable operation.