Abstract: Using input-output tables, this assay analyses the 30 years‘ changing characteristics of patterns of demand for services in the United States, the United Kingdom and Japan, then compares them with Chinese. The results showed that the proportion of final consumption expenditure is relatively lower while the proportion of intermediate consumption expenditure is relatively higher in China. Among the services which meet the Intermediate demands in China, the share of real estate & business services is relatively lower. This essay also analyses the causes of the differences and raises corresponding suggestions on the base of the analysis.