To provide an automobile body carrying device for realizing space-saving, an improvement in carrying accuracy, an improvement in workability, miniaturization of a device, simplification and weight reduction.

This automobile body carrying device has two power rails 130 laid in parallel along a carrying passage and an automatic carrying electric railcar 180 self-traveling oppositely on the power rails 130 and carrying an automobile body B toward a station 140 by unloading from a loading station 110. The problem is solved by laying a return rail 190 for returning the automatic carrying electric railcar 180 of becoming empty in the unloading station 140 to the loading station 110, just above the power rail 130.