To solve problems that since an airbag is deployed inside and outside a vehicle, a storage space before the deployment is required, and energy and a time are required for the deployment when a cargo is placed on a trunk room, it is difficult to deploy an airbag and exhibit an impact absorption function and the mounting of the airbag increases vehicle weight when collision targets are varied, the adjustment to absorption characteristics corresponding to conditions of the targets is impossible since mounting positions of an impact absorption member and a bumper etc. vary depending on vehicles, collision angles and conditions which can be absorbed are limited after a vehicle collision occurs, frame correction reduces the amount of energy absorption when a collision occurs again, thus leading to deterioration in safety, and repair requires a time and cost.

In this vehicle structure, a trunk room itself has an impact absorption function by strengthening the constraint of a trunk room body 3 and a lid 2 to enhance sealing, and the trunk room can be detached from a vehicle body 1.