The batter pile of pile-supported wharf has large stiffness and is prone to brittle failure under earthquake to cause the damage of wharf structure. As a mature technology to improve the seismic safety of the structure，seismic isolation technology has been widely used in buildings，bridges and other structures. Therefore，we add rubber isolation bearing at the top of batter pile to improve the seismic safety of wharf structure. Taking the coastal beamless slab wharf as the research object，we build the finite element analysis models of all-plumb-pile wharf structure，non-isolated batter pile wharf structure and isolated batter pile wharf structure by SAP2000 software，carry out the two-dimensional Pushover comparative analysis of the three structures，and compare and analyze the five aspects of natural vibration period，static Pushover curve，plastic hinge，pile bending moment and displacement capacity. The results show that the isolated batter pile wharf structure has large horizontal bearing capacity and displacement capacity，which can effectively solve the problem of brittle failure of batter pile.