It is possible to follow the classification of unilateral contract and bilateral contract in private law and clarify the administrative contracts in the same way, and further make clear the specific forms of these two categories of contracts.

• 可借鉴私法上关于“单务契约”与“双务契约”的分类，将行政契约作出同样的类型划分，并在此基础上明晰两类契约中的若干表现形态。