The simply supported beam structure has the advantage of rapid assembly, but it is seldom used in prefabricated high-piled wharf due to the lack of research on its horizontal force transmission performance.This paper analyzes the displacement distribution law of wharf structure subjected to horizontal concentrated force through the comparison of finite element model calculation.The results show that the full simply supported beam system has little effect on the weakening of horizontal force transfer performance of wharf structure, and can effectively transfer horizontal force under the condition of continuous surface layer, which is a feasible prefabricated technical scheme.For the piled wharf structure with full simply supported beam system, the horizontal force distribution coefficient should be appropriately increased on the basis of standard regulations in?Design Code for Wharf Structure.