越权无效原则是英国行政法的核心原则,也是英国普通法院对行政行为进行司法审查的基础,越权无效原则的产生和发展,从一个侧面反映了整个英国行政法的发展历程。通过研究越权无效原则,可以探究英国行政法的发展,从而对我国行政法的发展有所启发。 The principle of over-vain and invalidity is the core principle of the British administrative law. It is also the basis of the judicial review of the administrative act by the common courts in the United Kingdom. The emergence and development of the principle of invalidation of the ultra vires is a reflection of the development of the entire British administrative law. By studying the principle of invalidation of overriding authority, we can explore the development of British administrative law and give some inspiration to the development of administrative law in our country.