The results of systematic analysis on the supply-demand situation and the trend of recent years′water resources of Huairou District,Bejing City show that before the water from the south to north water diversion project reaches Beijing City,the water demand in Huairou district is much larger than the supply.Water resources are in a severe shortage situation.The main focus of water resource protection should be water saving.The construction of efficient pipelines,promotion of household water-saving appliances,adjustment of agricultural cultivation structure, and improvement on the recycling rate of industrial water should be carried out with the highest priority.After water from the project reaches Beijing,water demand from Beijing will declined sharply,and the water shortage in this District will be effectively alleviated.The main focus should be the protection and management of water resources; construction and management of sewage treatment facilities,construction of ecologically clean watersheds, and restoration of ground water resources should be carried out until then.