The utility model discloses a steel pipe composite pile which comprises a steel pipe, a shearing force ring, an anti-corrosion coating, a mud cake and a reinforced concrete pile. The steel pipe is adopted as a formwork in the hole forming process, so that the bending resisting performance and load-carrying performance of the steel pipe composite pile are improved. The shearing force ring is welded to the inner wall of the steel pipe, so that bonding between the steel pipe and concrete is enhanced, and the bending resisting performance of the steel pipe composite pile is improved. The anti-corrosion coating is formed on the inner wall, welded with the shearing force ring, of the steel pipe, so that corrosion of seawater to the inner wall of the steel pipe is avoided in the excavation process. The mud cake is formed on the surface of the anti-corrosion coating. The reinforced concrete pile is formed in the steel pipe with the shearing force ring, the anti-corrosion coating and the mud cake on the inner wall in a poured mode. The internal strength ultimate bearing capacity of the steel pipe composite pile with the mud cake, the anti-corrosion coating and the shearing force ring acting together can be calculated, and the positive application value on calculation of the internal strength ultimate bearing capacity of the steel pipe composite pile with the mud cake, the anti-corrosion coating and the shearing force ring is achieved.