The uncontrolled entry of ships from the upstream adjacent wharf into the prohibited navigation area of chongqing baiheliang inscription underwater protection project poses a danger to the traffic corridor connecting the coastal exhibition hall and the underwater protection body.In order to solve this problem,the anti-collision structure is studied.ANSYS/LS-DYNA software is used to build a nonlinear finite element model to simulate the collision process between ships and anti-collision structures.The time series results of collision force,collision energy and structural deformation under different water levels and collision angles are obtained.The multi-stage steel structure platform anti-collision facilities in the form of“group piles”are reliable,and the maximum structural stress is less than the tensile strength of steel.The structure under the collision is in a safe state,which can eventually stop the ship and protect the corridor,without damaging the urban landscape effect and coordinating with the surrounding building environment.