A miter saw is provided with a base unit on which target material is placed, a table unit rotatably provided on the base unit, a swing unit for swinging up and down above the table unit, and a cutting unit provided on the swing unit and having a flat motor provided with a rotor having an output shaft and a coil disc provided with a plurality of coil pieces arranged in the circumferential direction about the output shaft when seen in the direction of the axis of the output shaft and a stator having a magnet arranged such that magnetic flux passes through the coil disc in the direction of the axis of the output shaft, and a rotating blade rotation shaft on which a rotating blade can be mounted and positioned substantially parallel to the direction of the axis of the output shaft of the flat motor, and a power transfer unit that transfers the power of the flat motor to the rotating blade.