To provide a chassis frame for an electric automobile that widens an effectively usable space of an automobile body, reduces the total weight of the automobile body, lowers the center of gravity of the automobile body, arranges a plurality of hollow frames forming a floor structure not only in the vehicle length direction but also in another direction, and adopts a means for improving a cooling effect.

The chassis frame for an electric automobile, which uses the hollow frame of a substantially rectangular section as a unit, juxtaposes a plurality of frames 2 and 2' longitudinally along the automobile body on an automobile body floor, and a plurality of frames 3A, 3B, 3A' and 3B" perpendicularly to the longitude outside the longitudinal frames. The hollow part of each frame serves as a housing space for a component necessary to travel.