Harvesting chassis of corn harvester

This utility model relates to a harvesting chassis of corn harvester, which includes a front chassis mounted on a power machine, a harvesting chassis fixing frame, a straw cutter and a cutting chassis lift oil tank. A plurality of harvesters including a stripper and a cereal stirring machine is mounted on the harvesting chassis fixing frame, wherein the straw cutter is mounted at a cutting chassis fixing frame under the harvesting chassis fixing frame. The fixing frame is welded with a support shaft. The harvesting chassis fixing frame is rotatably mounted on the support shaft via a connector. A harvesting chassis lift oil tank is mounted between the cutting chassis fixing frame and the harvesting chassis fixing frame. The cutting chassis fixing frame may be rotatably connected with the front chassis via a rigid connector and a rotating element. The cutting chassis lift oil tank is mounted between the cutting chassis fixing frame and the front chassis. This utility model can adjust the stubble height, the cereal stirring and picking heights, and has the advantages of compact structure, convenient operation, simple adjusting, reliable running and wide applicability.