Abstract:Environmental Engineering Microbiology is a compulsory course for environmental majors. To meet the talent cultivation needs in the new era, we focused on the four key issues in the teaching and reformed the teaching of Environmental Engineering Microbiology through the innovation in four aspects:teaching content, teaching method, evaluation method, and integration of ideology and politics. After several rounds of application and the evaluation of teaching quality by multiple parties, we concluded that the reform significantly improved the teaching quality of the course.