The paper expounds the damage of the ship-bridge collision and the necessity of protected piers,classifies and comments all kinds of protection devices of bridge piers,then summarizes the merits and shortcomings of the current protection devices.

The study on the dynamic load applied to the bridge pier and its response during the process of ship-bridge collision is a complicated dynamic nonlinear problem.

The max collision force of ship-bridge collision is one of the most important factors for bridge design.

Nonlinear dynamic analysis was used to investigate the behavior of the vehicle-bridge collision.

Review of the researches on the ship collision mechanisms and the structural designs against collision;

Researches on Computer Aided Analysis Technology for Determining Ship s Responsibilities for Ship Collision;

Risk Assessment of Ship Collision Based on Adaptive Fuzzy System;

A typical collision accident in the bad visibility hours was analyzed by the simple mathematic model.

Then,after analyzing the rules of choosing law related to collision in Chinese Maritime Act,it points out that Article 273 need to be revised and the rules of choosing law on maritime tort should be set out in new Chinese Maritime Act.