Vehicle slide-door supporting structure

A vehicle slide-door supporting structure is provided which includes: a slide door which is a side door that opens and closes an opening through which a person gets into and out of a vehicle, the opening being formed in a side part of a vehicle body, the side door being slid in the front and rear directions so that the opening is opened and closed, and the opening being opened when the side door is slid rearward; and a driving mechanism which is connected to the slide door and drives the slide door, in which one part of the driving mechanism is attached to a tail lamp which is disposed at the rear part of the vehicle body.