在中国，目前既没有成熟的无效行政行为理论，也缺乏完善的无效行政行为制度。

But in today 's China, there is no mature theory and also a lack of perfect system of invalid administrative act.

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无效行政行为制度存在的理论基础是有限公定力说，该制度的存在是对行政行为公定力的挑战。

The theory's foundation of invalid administrative act system is the limited determination theory, and this institution is a challenge to the determination of administrative act.

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无效行政行为制度是伴随公定力理论的出现而提出的，是从保护相对人合法权益的角度对传统公定力理论的一种修正和完善。

The regulations of the voidable administrative act are proposed accompanied with the traditional theory of presumptive legality in order to defend the legitimate rights and interests of the relatives.

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