Abstract:As an important measure of the Ministry of Education to comprehensively deepen the education and teaching reform, the initiative of building national first-class undergraduate courses plays an essential part in improving undergraduate teaching quality, which has greatly boosted the research and reform in teaching. Environmental Engineering Microbiology (in English) is a core discipline in environmental engineering. Under the guidance of advanced educational thought, methods, and psychology, the teaching team of the discipline has carried out reforms and innovations in teaching philosophy, course content, teaching plan, and teaching practices, by highlighting ideological and political courses, teaching students according to their aptitude, and adding interactions between teachers and students and among students in class. To be specific, we introduced practical cases, supplemented the latest research progress in environmental microbiology engineering and teachers' research achievements in and out of classes, and improved the level, challenges, and innovation of the courses. On this basis, the knowledge, ability, and quality of students were improved and the learning outcome was significantly improved. As a result, the course is among the first batch of national first-class offline undergraduate courses and a first-class undergraduate course in Guangdong province.