The main differences between administrative contract and civil contract are whether the objective of the contract is public interest and whether the content is regulated by public law.

行政合同与民事合同的区别主要体现在合同目的是否具有公益性、合同内容是否受公法调整。

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As for the detailed conditions of causing invalidation of administrative contract, it can be scrutinized from three aspects: nature of public law, character of private law and its own characteristics.

至于导致行政契约无效的具体情形，则可从行政契约的公法属性、私法特性及自身特点三个方面来考察。

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Administrative contract is a new type of administrative pattern, and it is a special pattern between public law and civil contract.

行政契约是一种新型的行政管理方式，是游离于公法行为与民事契约之间的一种特殊形态。

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