Abstract: Cultivating students' engineering practice ability and innovation ability to solve complex environmental engineering problems is the primary task of college teaching reform nowadays. Based on the concept of professional certification of engineering education, the teaching reforms of drainage pipeline network engineering course for environmental engineering major are tried and explored, including the revision of teaching syllabus, the scientific design of classroom teaching, the diversification of engineering practice, the process assessment of curriculum, and the continuous improvement of teaching quality, etc. Finally, good results have been achieved in the teaching practice.