Abstract: Provided is a structure of a front body of an automobile comprising a steering system which can prevent a steering gear case from coming in contact with a road surface during running on a bad road or the like even if an under cover is not provided, and which can reduce costs, weight and size, and can provide proper (small) changes in the toe angle and the driver with a smooth sense of steering. In the front body of an automobile in which the suspension arm (lower control arm) and the steering gear case (pinion case) are attached to the suspension frame and at least a part of the steering gear case (for example, a pinion case) is placed below the suspension frame, a downward protrusion which protrudes downward and has a face slanted downward toward the rear portion of the automobile body is provided on the bottom portion of the suspension frame.