公共政策作为政治系统的输出,其合法性需要从形式和内容两方面进规范,形式合法是公共政策合法性的基本要求,内容合法则是公共政策合法性的本质要求。本文通过探究公共政策合法性的构成及形式合法与内容合法两方面的关系,分析公共政策合法性的困境与之的联系,从而为突破公共政策合法性的困境提供解决思路。 As the output of the political system, the public policy needs to be regulated in terms of form and content. The formal lawfulness is the basic requirement of the legitimacy of public policy. The legal content of the public policy is the essential requirement of the legitimacy of public policy. This article explores the constitution of public policy legitimacy and the relationship between the legal form and the legal content, and analyzes the plight of public policy legitimacy, so as to provide solutions for breaking the plight of public policy legitimacy.