The invention discloses a round baler bundling machine for corn harvesting. The round baler bundling machine for the corn harvesting comprises a vehicle body, a multifunctional header, a corncob box, an elevator, a bundling machine body, a straw receiving box and a connecting pipe; wherein the multifunctional header is mounted at the front end of the vehicle body, and the multifunctional header comprises a throwing device for throwing crushed straws; the corncob box is installed on the vehicle body and located behind the multifunctional header; the elevator is mounted on the vehicle body, is positioned between the multifunctional header and the corncob box, and is used for feeding peeled corncobs into the corncob box; the bundling machine body is mounted at the rear end of the vehicle body; the straw receiving box is mounted above the bundling machine body; two ends of the connecting pipe are separately connected with the throwing device and the straw receiving box. Compared with the prior art, when the round baler bundling machine for the corn harvesting is used, corncobs are peeled by the multifunctional header and then collected into the corncob box through the elevator, stalks are rubbed by the multifunctional header and then thrown to the straw receiving box at the rear through the connecting pipe, then the stalks enter the bundling machine body to automatically complete bundling, net winding and bale discharging, and non-stop continuous operation is achieved.