Soybean threshing device

The invention relates to a soybean threshing device which comprises a frame, a vibration roller, a driving roller and a screen assembly. The vibration roller and the driving roller are fixed into theframe in parallel. The screen assembly is located below the vibration roller and the driving roller. The vibration roller is located above the driving roller. A space for beanstalks to be inserted therein is reserved between the vibration roller and the driving roller. The two ends of the vibration roller are fixed into the frame through elastic supporting pieces respectively. The elastic supporting pieces can control the vibration roller to vibrate towards the driving roller on the lower side. The outer circumferential wall of the driving roller and the outer circumferential wall of the vibration roller are each provided with a plurality of threshing rods for exerting force on the beanstalks from the upper side and the lower side at intervals. The vibration roller and the driving roller are both driven by a motor