Pneumatic seed sorting device

The invention discloses a pneumatic seed sorting device, and mainly relates to the technical field of agriculture. Comprising a screening box body, a screen plate which is high in left and low in right is obliquely arranged on the lower portion in the screening box body, a lower fan is arranged at the bottom of the screening box body, a discharging bin is arranged at the right end in the screening box body and located on the upper side of the screen plate, and a plurality of vertical partition plates are sequentially arranged on the left side of the discharging bin from right to left; in the screening box body, the space on the left side of the discharging bin is divided into a plurality of sorting bins through vertical partition plates, and a seed collecting opening is formed in the rear side wall of each sorting bin. A side fan is arranged at the right end of the screening box body, and an air outlet of the side fan and a communicating port of the screening box body are located on the upper side of the scre