To provide a foot light device for a vehicle capable of facilitating mounting on an arbitrary position, reducing its costs, and avoiding possibility of generation of rust due to the mounting.

The foot light device 2 for the vehicle provided at a portion positioned at a lower part of a door D on an outer side body 1 of the vehicle and illuminating the ground in the vicinity of the door D is fitted in an existing hole 6 for removing paint or for side under-spoiler mounting previously formed on the outer side body 1, and enhances visibility during occupant's getting in/out the vehicle by illuminating the ground in the vicinity of the door D.