Corn thresher

The invention relates to the technical field of fresh corn processing, and particularly discloses a corn thresher which comprises a rack, a transmission chain assembly, a supporting plate, a feeding area, a threshing area, a feeding device with a movable plate, a first driving part, a second driving part and a puncturing part, and a threshing device with a threshing plate and a through hole. And the threshing knife group is provided with an elastic sliding block, a guide part, a rolling part and a threshing knife. According to the corn thresher, the multiple trays are arranged in the feeding area and the threshing area of the chain assembly, the threshing work efficiency is improved, the rotating part in the threshing cutter set can slightly abut against the outer side face of corn, then the corn is axially rotated and fed at the same time through the feeding device, and the corn threshing efficiency is improved. The distance between the threshing knife and the rotating part is fixed in the threshing process,