The invention relates to the technical field of engines, in particular to an even type impeller rotor engine. The even type impeller rotor engine comprises a rotor and a stator. The stator is provided with two combustion chambers, two exhaust openings and two air inlets. The two combustion chambers, the two air inlets and the two exhaust openings are in central symmetry relative to the center of the rotor. The rotor is provided with two air cylinders and two impeller areas. The two air cylinders and the two impeller areas are in central symmetry relative to the center of the rotor. The rotor is connected with piston connecting rods of the air cylinders through a planet inner crankshaft mechanism. According to the even type impeller rotor engine, circumferential motion of a rotor structure is used for replacing linear-circumferential motion of a traditional engine crankshaft, energy losses are reduced, and an even type impeller structure is used for replacing a crankshaft structure so as to obtain larger torque and improve power output.