Abstract: Pipe network for fluid distribution is a general theory and technology formed and developed in all kinds of public equipment engineering. It is the core basic course of building environment and energy application engineering. The course is systematic and covers a wide range of knowledge, but it is faced with problems such as insufficient class hours. Through constructing online-offline mixed teaching course system and improving the construction of course resources, students can complete independent learning online, teachers can organize students to communicate and solve problems offline and timely adjust teaching according to the feedback of students, ultimately improving the quality of course teaching.