Electric car body structure

There is provided a body construction of an electric car, in which a flat floor construction of the car body allowing batteries to be easily built therein and removed therefrom and to be accommodated under the floor in a space-effective manner is formed and in which power lines are rationally wired. In the body structure of an electric car, in which the batteries for feeding a power to a plurality of in-wheel motors (11a, 11b, 21a, 21b, 31a, 31b, 41a, and 41b) are accommodated in a floor portion of the car body, a front wheel frame (7) for having front wheels (1a, 1b, 2a, and 2b) installed thereon and a rear wheel frame (8) for having rear wheels (3a, 3b, 4a, and 4b) installed thereon are coupled by a backbone member (9) having an approximately rectangular hollow cross-section, and pluralities of battery-accommodating hollow frames (91a and 91b) are disposed to the right and left side surfaces of the backbone member (9) so as to lie parallel to each other and perpendicular to the longitudinal direction of the backbone member (9).