“柠檬市场”理论由乔治·阿克劳夫提出。他认为,当产品卖方对产品质量、价格比买方具有更多信息时,低质量产品将会驱逐高质量商品,从而使市场上产品质量持续下降,并出现“劣车驱好车,劣币驱良币”的现象。这种现象的产生是由于过度竞争市场上买卖双方对产品质量信息不对称所导 The theory of “lemon market” is proposed by George Akerlof. In his opinion, when the seller of the product has more information about the product quality and the price than the buyer, the low quality product will expel the high quality product, so that the quality of the product in the market will continue to decline, and the “inferior car drives the car, the inferior currency drive Good coin ”phenomenon. This phenomenon is due to over-competition between buyers and sellers in the market due to asymmetric information on product quality