The invention discloses a material sorting device. The material sorting device comprises a material sorting table; a material storing device with a material guiding opening is arranged on the materialsorting table; a material sorting device body supported by a support is correspondingly arranged below the material guiding opening; a gas source treating device is arranged at the rear of the material sorting device body; and the material sorting device body comprises structures of a material pressing mechanism, a material conveying plate, an infrared counter and the like. Through cooperation among the structures and through monitoring of a monitoring device, the effect that unqualified products are automatically sorted is achieved, meanwhile, the reject rate can be accurately calculated, and thus the equipment quality is further improved; and workpieces are sorted through the mechanical means, the material sorting speed is increased, the material sorting efficiency is improved, workersof factories are liberated from heavy manual labor, the manpower cost is reduced, factory machinery automatic production is achieved, the error of manual sorting is directly avoided, and the product pass rate is directly and effectively increased.