Based on the analysis of the data of GDP and water use per capita in China from 2004 to 2013, the relationship between them in various areas is investigated. The result shows that the relationship between water use and economic growth does not obey the commonly rule of Kuznets curve which presents like an “inverted U” curve. By modifying the curve model, the relationship between GDP and total water use per capita presents a “U+inverted U” pattern. For the indepth analysis of economic growth and evolution of water use in China, the indexes of the value of the primary industry in the proportion of GDP, disposable income per capita and urbanization rate are introduced to the model to measure the influences of industrial structure and urbanization level on the water use. It may provide a more rigorous and scientific basis for the future economic development in the process of rational development and utilization of water resources.