消费者权益保护问题是随着商品交换而产生的一种的经济问题,追求利润最大化的经营者与权益意识不断觉醒的消费者之间存在着不可避免的矛盾与冲突。“约定有利原则”正是基于这一矛盾从实质正义、社会本位等角度提出的以保护消费者权益为目的的法律原则。 The protection of consumers' rights and interests is an economic problem that arises along with the exchange of commodities. There is an inevitable conflict and conflict between those who pursue the maximization of profits and consumers who are constantly awakening their rights and interests. It is based on this contradiction that “the principle of favorable agreement” is based on the legal principle of protecting the rights and interests of consumers from the perspective of substantive justice and social standard.