The invention relates to an electric automobile power generation system. The electric automobile power generation system comprises a generator, a tire supporting frame, elliptical tires and a gear box. The electric automobile power generation system can be installed on an automobile frame or other parts, and an existing automobile is more convenient to refit; and in the running process of an automobile, electricity can be continuously generated through the generator, the electric energy consumed during the running of the electric automobile is supplemented, and the endurance mileage is prolonged.