A cutting method for cutting an inner circumferential face or an outer circumferential face of a work 3 comprises the steps of utilizing a cutting tool 2 protruded from a main shaft which turns around a predetermined position serving as a center and for which a turning radius is adjustable to cut the inner circumferential face or the outer circumferential face of the work 3, wherein a table that supports the work is set in a rotating central axis that is coaxial with a turning central axis of the main shaft, and the table is rotated in a direction opposite to a turning direction of the main shaft to summate a cutting velocity. The cutting method allows a summation to the cutting velocity under simple control.