The invention discloses a milling machine which comprises a bottom seat, wherein a motor arranged in the bottom seat, a motor cushion block is arranged below the motor, one end of an adjusting rod is penetrated into the motor cushion block, a main seat is arranged above the bottom seat, the main seat is provided with a base seat, the base seat is connected with an L-shaped lower cutter seat, the side part of the base seat is provided with a cutter holder fixing seat, the side part of the cutter holder fixing seat close to the base seat is connected with a pressure plate, the lower cutter seat is provided with a cutter holder, a cutter is penetrated into the lower cutter seat and the cutter holder, one side of the main seat and one side of the base seat are positioned on one plane, the other side of the main seat opposite to this side is positioned on the base seat, the other side is connected with a shaft sleeve, an eccentric wheel is positioned in the shaft sleeve, the eccentric wheel is connected with a large V-belt wheel, the large V-belt wheel is connected with a small V-belt wheel through a belt, the small V-belt wheel is connected with a motor, and the outer ends of the large V-belt wheel and the small V-belt wheel are provided with safety protection covers. The invention has the advantages of reasonable structure, high applicability, low cost and high working efficiency.