The invention discloses a special-purpose fixed cutting integrated machine for building special-shaped steel materials, which comprises a rocker-arm type cutting machine and a bearing part. In the present invention, a bearing part is provided, and the bearing part includes a walking guide frame, a cutting machine connecting plate, a lifting arm, an oil cylinder and a combination of magnetic suction connections, wherein the lifting arm is inside the walking guide frame, and one end of the lifting arm is hinged with the magnetic connection combination, and the oil cylinder controls The lifting arm swings up and down, and the magnetic suction connection combination is used to absorb the special-shaped steel located at the lower part of the walking guide frame. During the process of adsorption and rising, it has a tilt adaptive function. At the same time, the magnetic suction connection combination is also used in conjunction with the cutting machine connection plate, specifically After the magnetic suction connection combination carries the special-shaped steel up to the limit position, the cutting piece and the special-shaped steel of the rocker cutting machine on the cutting machine connecting plate can be in a vertical distribution state, which is convenient for cross-cutting, and the entire feeding, fixing, lifting and cutting process Simple operation, convenient and high safety.