“不对称信息”是西方经济学中的一个基本观点 ,其大致意思是指市场一方无法观测和监督另一方的行动或无法获知另一方的完全信息 ,抑或观测监督或获取情报的成本高昂时产生的问题。在市场活动中“信息不对称”的情况发生时 ,会出现知情者作出的“败德行为” ,或不知情者不得不 “Asymmetric information” is a basic viewpoint in Western economics. Its general meaning is to mean that one side of the market cannot observe and supervise the other’s actions or can’t know the other side’s complete information, or it can be caused when the cost of observing supervision or obtaining information is high. The problem. In the event of “asymmetric information” in market activities, there will be “deterrence” made by insiders, or the uninformed person will have to