Abstract: Based on the dynamic game theory and the Leontief model, the event of west coast port lockout in USA is analyzed by applying the Nash equilibrium model, and its possible results are discussed. The research shows that after the struggle between the Stock Workers Union (SWU) and the Pacific Maritime Association (PMA), the Pareto optimality can be approached in a long period. However, with the change of environment and time, this equilibrium will change, and the struggle between the SWU and the PMA may arise repeatedly. Therefore, this kind of events will emerge in the future again.