在正交易费用条件下,专用性资产、有限理性和机会主义因素的相互作用导致了契约的不完全性。不完全契约在事后条件发生变化的情况下,会超出自我实施范围。在契约的执行过程中,法庭判决的方式越来越被私下解决的方式所取代,契约体现了法律的和私人的双重性质。不完全契约理论通过对交易的分析,对新古典的契约理论有所突破和发展,但其本身也有局限性。 Under the condition of normal transaction cost, the interaction of the exclusive assets, the bounded rationality and the opportunist factors leads to the incompleteness of the contract. Incomplete contract in the event of a change in conditions, will go beyond the scope of self-implementation. In the course of execution of contract, the way of court judgment is more and more replaced by the way of private settlement. The contract embodies the legal and private dual nature. The incomplete contract theory breaks through and develops the neoclassical contract theory through the analysis of the transaction, but it also has its own limitations.