一、原理与问题信息经济学是非对称信息博弈论在经济学上的应用。所谓信息不对称 ,是指在参与博弈的各方中间某些方拥有的信息 ,其他方并不拥有。信息经济学的所有模型都在委托—代理人的框架下进行分析 ,其目标是在非对称信息情况下寻求最优的制度安排 ,既设计一个最优激励与 First, the principle and problem Information Economics is the asymmetric information game theory in economics applications. The so-called information asymmetry refers to the information that some parties in the middle of the parties involved in the game have and the other parties do not own it. All the models of information economics are analyzed under the framework of principal-agent. The objective of this model is to find the optimal institutional arrangement under asymmetric information, and to design an optimal incentive