Traditional research on consumer behavior is based on"representative consumer",which shows thatthe pref- erence of consumer is identical.In practice,this assumption is inconsistent with stylized fact,such as different cultures and different ages of consumers' preferences are different.We build China consumer behavior model with heterogeneity of individual preferences according to exactly aggregation theory of Jorgenson(1982)in order to reflect exactly individual preferences with different demographic characteristics.The paper divides consumer expenditures into five broad catego- ries in comparison with NBS.On the basis of that,we analyze the impacts of different attributes of demographic charac- teristics on the consumption structure in urban.