To provide a plastic working method and its apparatus by which the plastic working is performed without bulging the surface of a disk to the side of a pressurizing member and deforming the flange part of the outer side.

In the plastic working method in which a mandrel M is arranged on the spindle 3, a workpiece W is fit outside this mandrel M and drawing is applied to the workpiece W with a drawing roller, when the work is performed with a drawing roller R1 for working, the starting point of the work is pressed and supported with a drawing roller R2 which is a different roller.