Hydraulic is a compulsory course for civil engineering, also the core professional basic course during undergraduate education for water supply and drainage science and engineering. The teaching effect of this course is very important to the later study of the students on the professional courses that are involved in hydraulic knowledge. This article was focused on the exploration of improving the teaching quality of hydraulics course for water supply and drainage science and engineering. It was suggested that using multiple teaching mode, such as the combination of self-interaction, "chalk + blackboard blackboard" and video animation multimedia, is a kind of ideal teaching mode, which combines the heuristic and the teaching way. Second, improving the students ability of practice, and actively guiding the students to attend the independent innovation activities were proposed. This kind of teaching mode can fully motivate the enthusiasm of the students learning the hydraulics, while promoting the teaching quality, and ultimately achieve a better teaching effect.