流通是为了缓解和解决商品供给和商品需求之间的矛盾而诞生的。本文认为,生产方式变革是引起商品供给变化的原因,称之为“生产方式引致的大量化”;消费需求升级是引起商品需求变化的原因,称之为“消费需求引致的大量化”。当“生产方式引致的大量化”和“消费需求引致的大量化”在时间、空间、集散等方面发生矛盾时。这就必须借助流通使不一致的供给和需求转化为一致的交易,该矛盾推动流通不断演化与发展。 Circulation is to ease and solve the contradiction between the supply of goods and the demand for goods was born. This paper argues that the change of mode of production is the reason that causes the change of commodity supply, which is called “the mass production caused by mass production.” The upgrading of consumption demand is the reason that causes the change of commodity demand, which is called “the massive demand caused by consumer demand ”. When there is a contradiction in the aspects of time, space, collection and distribution, etc., the “mass production caused by production” and the “mass production caused by consumer demand”. This must be achieved through the circulation of inconsistent supply and demand into a consistent transaction, the conflict to promote the continuous evolution and development of circulation.