Conventional protruding bars cannot connect the integral prefabricated beam and pile cap of a high-piled wharf.In view of this problem, this paper proposes a replacement method using section steel and post-grouting of reserved holes in the beam based on an actual project.The paper uses the numerical analysis method to calculate the internal force of the structure and the stress of the material.The results show that the core of the technical scheme of the section steel replacement method lies in the equivalent design for steel content and its inertia moment.In addition, the feasibility of the technical scheme is verified.