In a front structure of automobile hood, it is intended to, in the event of application of impact load to an external surface of outer panel, increase an extent of displacement of anti-dent reinforcement in the direction of impact load. In the front structure (1) of automobile hood, anti-dent reinforcement (70) is joined to outer panel (20) and inner panel (30) and disposed as a plate member extending along the lateral direction of the automobile in the state of being interposed between the two panels (20,30) perpendicularly to the two panels (20,30). The anti-dent reinforcement (70) at its vertical wall portions (74a,74b) is provided with stress concentration zones (70a,70b) where the stress is concentrated. Accordingly, structuring is made so that in the event of application of impact load to the external surface of the outer panel (20) from the outside of the automobile body, the impact load is absorbed by bending deformation of the vertical wall portions (74a,74b) of the anti-dent reinforcement (70) by means of the stress concentration zones (70a,70b).