Abstract: In this paper, a cutter that was used to cut corn away from the cob was introduced. During operation, the blades of the cutter always contact with the periphery of the corn cob elastically and the diameter of the cutting hole formed by six blades can be changed according to the diameter of the corn cob in the cutting hole, so that the cutting always takes place on the heads of the corns. When the ear passes through the cutting hole along a straight line, the blades revolve　around the center of the cutting hole at a high speed to cut the corn. The characteristics of the cutter is of high efficiency ,good quality and suitable for processing sweet corn with the moisture content ranging from 58% to 75%. The cutter can be used to process not only sweet corn but also glutinous corn., so it can strengthen corn processing ability in China. The test results show that the cutter is a perfect machine for corn cutting.