2.1 features the city's tourist source from a development point of view, the city's tourist source function is the inevitable result of urban development, it can not stop the source mainly from two aspects. First, the city's economic prosperity rational objective is to continuously improve the quality of people's lives, people's consumption capacity growth, the consumption structure, the author of the Engel coefficient Engel found that as incomes rise, the total expenditure on food and other necessities The amount essentially unchanged, while luxury goods, education, entertainment, savings, etc. (including tourism) spending has risen.