With the development of our economy, urbanization is becoming more and more quickly, and then, there is a series of problems. The rise of urban population led to the rise of the urban water supply, to city water supply and drainage construction, urban water industry development belt of the opportunities and challenges. At present, the city's drainage system to keep pace with the development of the city problems, encountered a storm weather, street light, water, or flooding, bring serious damage to property, is not conducive to the sustainable development of the city. To this, this paper introduces the importance and the current situation of urban water supply, drainage of drainage problems of cities in China, and puts forward some solving measures.