In recent years, there have emerged many cases that the pier piles take out a larger deviation of the project due to the backfill for the slope. Combining with a wharf project in the Three Gorges Reservoir area, we analyze the interaction between the bank slope and piles of overhead ramp by the finite element method, discuss how the presence of pile foundation improves the slope stability and how the slope soil deformation impacts the pile foundation, contrast the pile’s inner force and displacement in the pile head free and constrained by a continuous track beam, and reveal that the pile force can be improved and the displacement of pile head can be decreased in the latter case.Based on the engineering projects, we propose two measures to reduce the loads of bank slope pile foundation, which are proved to be effective and rational by the finite element analysis method, and which may serve as a reference for similar projects.