Harvester transmission system and combine harvester

The utility model relates to a harvester transmission system which is applied to a double-longitudinal-axial-flow combine harvester, the double-longitudinal-axial-flow combine harvester sequentially comprises a header, a machine body and a chopper in the front-back direction, a roller is longitudinally arranged on the machine body, an engine is fixed above the machine body, the engine is provided with a power output part, and the power output part is connected with the chopper. The harvester transmission system comprises a first transmission shaft arranged on the front portion of an engine and a second transmission shaft arranged on the rear portion of the engine, and has the advantages that the transmission arrangement is simple and compact, and the harvester transmission system is particularly suitable for a small-sized double-longitudinal-axial-flow combine harvester. And the requirements of users for harvesting the same crops under different working conditions and different crops under different working c