Cast-in-place upper and lower beams, pile cap joints and precast or cast-in-place beams are commonly used in the superstructure of the traditional high-pile beam-type wharf, which has large concrete pouring volume, many processes and a long construction period.Based on the design example of a Shanghai water viewing platform, an integral prefabricated beam structure with reserved pile foundation holes and embedded support I-beams is proposed, and the cast-in-place pile cap structure is eliminated.The instability problem of the prefabricated beam on pile foundation and the structural safety problem of the prefabricated beam during construction are solved, and the direct connection between the prefabricated beam and the pile foundation structure is realized.While ensuring the integrity of the structure, the precast assembly rate of the superstructure is improved, and the amount of concrete poured on site is greatly reduced, the construction is environmentally friendly and the construction period is shorter, which can provide reference for similar projects.