In order to promote the optimizing configuration of commons ' resource and avoid the generation of tragedy , based on the theory of ectypal , dynamic and optimum steady strategy in limited sense , the paper establishes the dynamic game theory models and puts forward a series of solutions , and provides a powerful argumentation to the government in order to implement the strategy of city bus priority 为促进公共资源优化配置，避免公共资源悲剧的发生，以有限理性的复制动态和优化稳定策略分析为基础理论，建立动态博弈模型并进行求解，从而提出了解决城市交通问题的办法，为政府实行公交优先机制提供了有力论证。
