Abstract: At present, with the rapid development of my country's social economy, people's living standards have been greatly improved, and at the same time, it has promoted the vigorous development of the construction industry.With the continuous increase in the number and scale of buildings, the water consumption of construction projects has increased significantly.Based on this, this article first discusses the current situation of building water supply and drainage engineering, and analyzes its future development trend on this basis, in order to provide help for the healthy and sustainable development of my country's building water supply and drainage industry.