Abstract: In order to improve the teaching of the course and practice of building water supply and drainage engineering,this paper discusses the problem existing in the teaching of building water supply and drainage engineering and analyzes the factors affecting its teaching quality.The main practices,experiences and characteristics of the course and practice teaching of building water supply and drainage engineering are summarized from four aspects:curriculum teaching,internship,curriculum design and graduation design.Teaching improvement should be combined with vocational ability training,self-made project visit operation,and heuristic teaching to improve the theoretical teaching effect and the quality of course training.By strengthening the curriculum design content and the graduation design topic of one person,one question,expanding the scope of graduation design topics,and improving the assessment method to carry out graduation design reform,students engineering design practice ability can be improved,and the overall quality of students can be improved.