Driving Support Method and Driving Support Device

When accelerating a vehicle toward a set speed after the vehicle travels on a curved road at a vehicle speed equal to or lower than a speed limit based on the curved road, a driving support method and a driving support device accelerate the vehicle by a first acceleration in a case of acquiring a curve information related to the curved road, and accelerate the vehicle by a second acceleration smaller than the first acceleration in a case of not acquiring the curve information.