Corn thresher

The utility model provides a corn thresher. The corn thresher is characterized in that a rack, threshing rolls, a screen net and an outer cover are included, a plurality of the threshing rolls are installed on the rack, the threshing rolls are mutually parallel and are located on the same plane, an included angle is formed between the plane and the horizontal face, the screen net is located below the threshing rolls, the outer cover is buckled on the screen net and forms threshing rollers with the screen net, the threshing rolls are located in the threshing rollers, the portion, at one end of the threshing roller at the uppermost end, of the outer cover is provided with a material inlet, oblique threshing teeth are arranged on a part of the roll face, close to the material inlet, of each threshing roll and propelling blades are arranged on the other part of each threshing roll. According to the corn thresher, work efficiency is high, corncobs are completely threshed, the breaking rate of corn is low and the corncobs are complete.