近几年来,伴随着国内经济水平的不断提高,城市中建筑的数量与规模也在急剧的增加。建筑的给水工程关系到建筑的服务功能,并且影响到居民对于建筑的居住与使用质量。当下国内的水资源较为贫瘠,做好建筑给水工程的节能节水工作有着极其重要的作用。本文先对建筑给水的节水节能的重要性与水电资源的浪费问题进行研究,并进一步探讨建筑给水工程的节水节能方法。 In recent years, with the continuous improvement of the domestic economy, the number and size of buildings in cities have also risen sharply. The water supply project of the building relates to the service function of the building and affects the resident’s quality of living and use of the building. The current domestic water resources are more barren, do a good job in building water supply works of energy-saving water-saving work has an extremely important role. This paper firstly studies the importance of water saving and energy saving of building water supply and waste of hydropower resources, and further discusses water saving and energy saving methods of building water supply project.