This machine is mainly composed of an ear picking mechanism, an ear box, a straw cutter, and a harvester. During operation, the harvester moves forward along the direction of corn ridge cultivation, and the corn plant is straightened by the reel; the corn plant is fed into the oppositely rotating picking roller by the reel, and the ear stem is pulled off under the action of the picking roller and ear picking plate; due to the Due to the height difference between the inner and outer picking rollers, the ears fall into the ear box. After the ears are full, they are opened and stacked. 4YW-2B with granary type uses a conveyor belt to send the ears into the granary above the tractor. The high-speed rotating cutter cuts the straw from the root and then sends it to the crushing mechanism to chop it into 4-6CM long pieces; the chopped straw is automatically scattered.