The invention provides an automobile body structure. Lower load transmission components (17) have a roughly-certain automobile width direction width (W) in the overlooking observation process, bent parts (17c) formed on the middle portions in the front-back direction are bent in the mode of protruding outwards in the automobile width direction, groove parts (17d) extending in the up-down directionare formed in the inner walls of the bent parts (17c) in the automobile width direction, when the lower load transmission components (17) are observed from the side faces, the upper walls are even, the lower walls are bent in the mode of protruding downwards, and the positions near the bent parts (17c) hereby have the largest up-down direction height (H). Therefore, when a head-on collision happens to an automobile, the lower load transmission components (17) are bent to the outer sides in the automobile width direction, the situation that the lower load transmission components (17) make contact with the road surface and a front auxiliary automobile frame (18) is pushed up is avoided, and the crushing travel of retraction of an engine and a transmission hereby can be guaranteed.