商品的二因素是商品的使用价值和价值。然而商品的使用价值和商品的边际效用之间存在着必然的联系 ,即商品的使用价值因人、因时、因地其边际效用是不同的 ,只有在商品的边际效用和使用价值最大时 ,商品的消费者和生产者才能得到最大的满足 ,才能实现资源的最有效配制。社会主义市场经济紧紧围绕商品和市场两大内容来组织生产和经营 ,所以 ,充分运用好这一规律 ,对于实现资源的有效配置 ,提高经济效益具有重大的现实意义 The second factor is the use of goods and value of goods. However, there is a necessary relationship between the use value of goods and the marginal utility of goods, that is, the value of use of goods varies from person to person, because of its marginal utility. Only when the marginal utility and use value of goods are maximum, Consumers and producers of goods can get the greatest satisfaction, in order to achieve the most efficient allocation of resources. Therefore, making full use of this law is of great practical significance for the effective allocation of resources and for the improvement of economic efficiency