消费者竞争是消费者在购买商品及服务过程中为争取有利的交换条件而进行的经济活动的总括。消费者竞争在不同的经济背景和市场态势下有不同的形态，在我国有讨价还价、灰市交易、抢购、＂王海现象＂等几种。消费者竞争的机理主要有三点：一是消费者身份多元论；二是消费者剩余理论；三是信息偏在与消费者预期。 Consumer competition is a generalization of economic activities that consumers carry out in the purchase of goods and services for favorable exchange conditions. There are different forms of consumer competition in different economic backgrounds and market situations. There are several kinds of bargaining, gray market trading, buying and selling, and “Wang Hai phenomenon” in our country. There are three main mechanisms of consumer competition: First, multiple identities of consumers; Second, the theory of consumer surplus; Third, information bias and consumer expectations.