VEHICLE LID DEVICE

This vehicle lid device includes: a box provided on a vehicle-body deep side and having an opening for exposing a storage space to a vehicle-body outside; a lid to open/close between opening-closed/opened positions; and an open/close mechanism to open/close the lid between the closed/opened positions. The open/close mechanism includes a rotary gear rotatable about a rotation axis extending along a vehicle-body back surface on the vehicle-body deep side, a slide member provided on the vehicle-body deep side, meshed with the rotary gear, and slidable along the vehicle-body back surface through rotation of the rotary gear, a first guide mechanism to move the lid in a vehicle-body front-back direction relative to the box by the slide member sliding in a first region section, and a second guide mechanism to move the lid along the vehicle-body back surface relative to the box by the slide member sliding in a second region section.