关键词: 无效行政协议, 行政行为无效, 合同无效, 依法律行政原理, 契约严守原则

Abstract:

As a way of administrative activities, administrative contracts need to comply with the principle of administration by congress's laws; as having the attributes of contracts, administrative contracts must abide by the basic principles of contracts. The nullity standard of administrative act may be applied in the declaration of the nullity of administrative contract, but there may still be special nullity standards for the administrative contract; the nullity standard of the civil contract law may also apply mutatis mutandis, but it still needs to be coordinated with the principle of public law. The determination and selection of the nullity standard of administrative contact requires the measurement of values between the principle of administration by congress's laws, strict adherence to the law, the superiority of law, the stability of law and reliance protection.

Key words: null administrative contract, nullity of administrative act, nullity of contract, principle of administration by congress's laws, strict adherence to the law