An apparatus for cutting a plastic bar-shaped food which is continuously extruded from an extruding mechanism into a bar shape having a core material, the food material efficiently cut off into a globular shape without exposing the core food material to the outside and leaving any burr on the cut end portion. The bar-shaped food material has a core material which is formed into a globular food product with an inner core food material covered with an outer skin food material. A cutting mechanism is provided below a nozzle of the extruding mechanism, the cutting mechanism having at least three shutters in which an arc cutter side having chamfer portions on its upper and lower surfaces is formed on the side portion of each shutter. A cutting tip for cutting the bar-shaped food material is formed on the free end portion of each shutter while each shutter is pivotally mounted so that each cutting tip side faces one another. By swinging reciprocally and synchronously each shutter of the cutting mechanism, an expanding and constricting gate is generated in the center portion. By extruding and supplying, the bar-shaped food material is constricted and all the constricted surfaces of the constricted and squeezed food material is smoothed and rubbed, thereby cutting the food material into the globular shape.