A steering support device which can perform steering support control excellent in follow-up performance on a traveling road by increasing a steering amount by steering control at the entrance of a curve. The steering support device (1), calculating a steering target value based on the shape of a road on which a vehicle travels and supporting steering depending on the steering target value, judges whether or not the vehicle is traveling through the entrance of a curve of the traveling road, and, if a judgment is made that the vehicle is traveling through the entrance of a curve, increases variation in steering target value as compared with a case when the vehicle is not traveling through the entrance of a curve. Consequently, steering amount of steering wheel can be increased at the entrance of a curve and delay in increasing steering amount can be suppressed at the entrance of a curve.