公共政策过程本是一个由政策制定、政策执行、政策评估和政策终结等环节构成的完整周期,但由于现实中的政策受到诸多障碍因素的影响而难以终结,这就导致了资源的巨大浪费和过低的政策绩效。因此,促使那些过时的、无效的公共政策得以终结应摆上当前各级政府的议事日程。引致政策终结四大外因是:触发机制、政策评估、政治领导者的领导力和公共舆论的推力。 The public policy process is a complete cycle consisting of policy formulation, policy implementation, policy evaluation and policy termination. However, due to the fact that the policy in reality is hard hit by many obstacles, it will lead to a huge waste of resources. Low policy performance. Therefore, to bring those outdated and ineffective public policies to an end should be put on the current agenda of all levels of government. The four external causes that led to the end of the policy are: triggering mechanisms, policy assessment, leadership of political leaders and thrust of public opinion.