To provide an automobile body structure causing little damage on an opening-closing panel by movement of a cargo loaded on a loading space.

A step part 20 restrains a direct collision with the opening- closing panel 6 of the cargo X loaded on the loading space 4. A reinforcing material 32 restrains a curve of the opening-closing panel 6 due to the moment around a colliding position of the opening-closing panel 6 caused by the collision. A support means 34 elastically regulates forward movement of a prescribed part of a rotary shaft 12 caused by the collision. Thus, this automobile body structure can restrain damage of the opening-closing panel 6 by using the step part 20, the reinforcing material 32 or the support means 34.