A device for attaching and removing a vehicle component to and from a vehicle includes a vehicle body side formed with a contacted portion with which a component can come into contact and a locking device for making a locking action for removably attaching the vehicle component to the vehicle body side in a state of the vehicle component being held in contact with the contacted portion. The vehicle component is made capable of coming from outside into contact with the contacted portion and movable in one direction generally in a straight line while the vehicle component remains held in contact with the contacted portion, and the locking device is adapted to make the locking action as interlocked with a motion of the vehicle component in the one direction.