The utility model provides a maize harvesting machine, its utilization is skinned the device and is peelled off the bract by the maize spike body of results portions results to utilize the swing screening body to screen into bract and seed grain from the handled thing that the device of skinning fell, can improve as from the holistic screening precision of device exhaust handled thing that skins. The orientation upstream side was transferred to handled thing be equipped with the orientation swing screening body (41) between the device of skinning (30) and the swing screening body (41) in position flows down the guide body (51) of the handled thing that the guide fell from the device of skinning (30).