Disclosed is an air-blowing type combine harvester, comprising a machine body, a reel which is able to rotate by 360° and provided at the front end of the machine body, a cutter which is able to swing left and right and provided at the lower end of the reel, and a cylindrical cutter stand auger provided at the rear end of the cutter, wherein the cutter stand auger is a connected body with a threshing drum assembly, the threshing drum assembly is in communication with a hopper having left and right grain-conveying helices, the hopper comprises an air duct at the bottom, two ends of the air duct are respectively in communication with an air intake pipe and an outgoing air pipe, and the air duct is in communication with a grain/chaff separating apparatus via the outgoing air pipe. Grain and chaff separated from the threshing drum assembly are sent to a fallen material port at the lower end of the hopper by means of the left and right grain-conveying helices, fall through the fallen material port into the outgoing air pipe, enter the grain/chaff separating apparatus via the outgoing air pipe due to the air blowing and are automatically selected by winnowing, grain is conveyed to a grain outlet to be bagged via a screw conveyor at the bottom of the grain/chaff separating apparatus, and chaff will be discharged out of a chaff outlet under the effect of the air. The combine harvester has the advantages of a simple and rational structure, strong applicability, and convenient manufacture, assembly, and maintenance.Linvention concerne une moissonneuse-batteuse du type à soufflage dair, comprenant un corps de machine, une bobine qui peut tourner de 360° et est située à lextrémité avant du corps de machine, un élément de coupe qui peut osciller à gauche et à droite et est situé à lextrémité inférieure de la bobine, et une tarière verticale délément de coupe cylindrique située à lextrémité arrière de lélément de coupe, la tarière verticale délément de coupe étant un corps relié
