The invention relates to an internal climbing tower crane climbing method without using an inverted beam method. Through arranging three support beams and two lifting oil cylinders, an internal climbing tower crane climbs without inversely transporting the support beams. An implement device comprises the tower crane upper beam, the tower crane middle beam, the tower crane lower beam, a climbing frame, the two lifting oil cylinders, a limiting and guiding device, a climbing joint and a hydraulic control system. The method mainly comprises the following steps of balancing a tower crane, and supporting the tower crane middle beam on a main structure; operating the hydraulic control system, stretching the lifting oil cylinders for lifting the tower crane upper beam to lift up, driving the tower crane to lift up at the same time, separating the tower crane upper beam from the main structure, solidifying the tower crane lower beam and the climbing joint, and synchronously lifting the tower crane lower beam and the tower crane; and connecting the tower crane upper beam with the main structure after lifting the tower crane upper beam in place, bearing a load of the tower crane through thetower crane upper beam, separating the tower crane middle beam from the structure, operating the hydraulic control system, contracting the lifting oil cylinders, lifting the tower crane middle beam, and accomplishing one-time climbing after lifting the tower crane middle beam in place.