To provide a turning method without generating chattering vibration in a material to be cut, even after a terminal end of the material to be cut passes an inlet side guide roller, in the turning method in a turning machine such as a bar peeling machine with a cutter turning around the outer periphery of the material to be cut.

In this turning method in the turning machine with the cutter turning around the outer periphery of the material W to be cut, the material W which is supported by the inlet side guide roller 3 and an outlet side guide roller 5 and moves from an inlet side to an outlet side is turned by the cutter 4 rotating around the material W between the inlet side guide roller 3 and the outlet side roller 5. In the method, the turning is performed, periodically changing rotational speed of the cutter from time just before the terminal end of the material W passes the inlet guide roller 3.