本文就近观察了1990以来20年美国居民消费支出和消费结构变化的数据,特别是由金融危机引起的经济衰退对美国居民消费的影响,从经济运行角度,考察了美国金融危机爆发之前、之中居民消费的状况,金融危机和消费支出的相互影响,提出了消费在经济周期中的不可忽视的重要作用。 This article has recently observed the data of the changes in the consumption expenditure and consumption structure of the U.S. residents in the past 20 years since 1990, especially the impact of the economic recession caused by the financial crisis on the consumption of residents in the United States. From the point of view of economic operation, before examining the financial crisis in the United States, The situation of residents’ consumption, the interaction between the financial crisis and consumer spending put forward the important role that consumption can not be ignored in the economic cycle.