To jack up a vehicle body stably when necessary without fixing a part for jack-up by setting a jack-up point suitable for various vehicle bodies.

The tool for jack-up mounted on the jack-up point of a vehicle includes a body 31a formed in a shaft-like shape extending in a jack-up direction, a screw part 32a, arranged at a distal end of the body 31a, for screwing with a screw hole arranged at the jack-up point and a receiving face part 33a, arranged at a base end of the body, to which a support part of a jack contacts when jacking up.