A steering method for a steering device that intentionally turns two axles (12a, 12b) of each of two trucks of a railway vehicle relative to a frame of the respective trucks, the two trucks being arranged in front and rear of the railway vehicle with respect to a direction of running of the railway vehicle, the two axles (12a, 12b) being arranged in front and rear of each of the trucks with respect to the direction of running, the steering method for a truck of a railway vehicle comprising the step of: steering the axles (12a, 12b) such that a steering angle α 1 of a first axle on the front of the front truck and a third axle on the front of the rear truck is larger in magnitude than a steering angle α 2 of a second axle on the rear of the front truck and a fourth axle on the rear of the rear truck, characterised in that the steering includes steering the axles (12a, 12b) in a range defined by a region in a graph having the steering angle α 1 of the first and third axles on the X-axis and the steering angle α 2 of the second and fourth axles on the Y-axis which is encompassed by straight lines joining a first value where, when the steering angle α 2 of the second and fourth axles on the rear is larger than a radial steering angle, which is a steering angle at which the wheels attached to the axles will be in the most ideal steering state when running on the curved track, and the steering angle α 1 of the first and third axles is 35.3% larger than the radial steering angle when the steering angle α 2 of the second and fourth axles on the rear is equal to the radial steering angle, and a second value where the steering angle α 2 of the second and fourth axles on the rear is 8.8% larger than the radial steering angle when the steering angle α 1 of the first and third axles on the front is 30% larger than the radial steering angle. steering the axles (12a, 12b) such that a steering angle α 1 of a first axle on the front of the front truck and a third axle on the front of the rear truck is larger in magnitude than a steering angle α 2 of a second axle on the rear of the front truck and a fourth axle on the rear of the rear truck, characterised in that the steering includes steering the axles (12a, 12b) in a range defined by a region in a graph having the steering angle α 1 of the first and third axles on the X-axis and the steering angle α 2 of the second and fourth axles on the Y-axis which is encompassed by straight lines joining a first value where, when the steering angle α 2 of the second and fourth axles on the rear is larger than a radial steering angle, which is a steering angle at which the wheels attached to the axles will be in the most ideal steering state when running on the curved track, and the steering angle α 1 of the first and third axles is 35.3% larger than the radial steering angle when the steering angle α 2 of the second and fourth axles on the rear is equal to the radial steering angle, and a second value where the steering angle α 2 of the second and fourth axles on the rear is 8.8% larger than the radial steering angle when the steering angle α 1 of the first and third axles on the front is 30% larger than the radial steering angle. a first value where, when the steering angle α 2 of the second and fourth axles on the rear is larger than a radial steering angle, which is a steering angle at which the wheels attached to the axles will be in the most ideal steering state when running on the curved track, and the steering angle α 1 of the first and third axles is 35.3% larger than the radial steering angle when the steering angle α 2 of the second and fourth axles on the rear is equal to the radial steering angle, and a second value where the steering angle α 2 of the second and fourth axles on the rear is 8.8% larger than the radial steering angle when the steering angle α 1 of the first and third axles on the front is 30% larger than the radial steering angle.