Lifting appliance adaptive to special-shaped box girder

The invention discloses lifting appliance adaptive to a special-shaped box girder, which comprises a lifting frame, four distribution bottom beams and connecting pieces, the four distribution bottom beams are arranged below the lifting frame, are opposite in pairs and are distributed on the two sides of the special-shaped box girder to be lifted in the width direction respectively, a row of connecting pieces are arranged below each distribution bottom beam in the length direction of the distribution bottom beam, and the connecting pieces are used for being connected to the special-shaped box girder. The distance between the opposite distribution beams located on the two sides of the special-shaped box girder can be adjusted so as to adapt to box girders of different widths, the lifting appliance can adapt to the special-shaped box girders of different widths and different angles and can further adapt to the offshore construction environment with large stormy waves, the distribution bottom girders and the lift