By analyzing the social and economic conditions of Hefei City, the water quality, water resources per capita, GDP per capita, disposable income per capita, and population density, which can reflect the function and scarcity of water resources as well as the affordability of water price, were chosen as the impact factors of resource water price. Cloud model was established on the basis of upper limit of resource water price that was determined by the affordability index of water price and water supply factors, and the weight of each index was determined in combination with the excess multiple method. According to the analysis, the resource water price during 2014—2017 in Hefei City was 3. 06 yuan/m³, 3. 70 yuan/m³, 4. 28 yuan/m³ and 5. 35 yuan/m³, accordingly. With the development of economy, the resource water price has a rise and the water resource is more important for the development of society and economy.