A vibration stop device (1) is provided, wherein a plurality of holding parts for vibration stop (11) holds an outer circumferential surface of a columnar workpiece (2) in a process stage under a pressure contact state with pressure supplied from a hydraulic cylinder (31), and wherein a pressure contact position on the outer circumferential surface is changed by rotation of the workpiece (2), wherein an angular range formed by both ends of each of the holding parts for vibration stop (11) is larger than an angular range of the processing region (21) regarding an angular range based on a position of an axis of rotation of the columnar workpiece (2).