Descaling machine

The utility model discloses a descaling machine which comprises a rotary drum and a motor connected with a rotating shaft of the rotary drum through a belt, wherein a gap is arranged on the wall of the rotary drum, and a plurality of triangular raised strips for removing fish scales are arranged on the inner wall of the rotary drum. A water pipe for water spraying and cleaning is also arranged in the rotary drum. By adopting the descaling machine, the defects that the artificial descaling is more labor-consuming, and the descaling speed is slow are overcome. The descaling machine is small in volume, is convenient to use and can improve the production speed.