Under the background carbon peaking and carbon neutrality, it is a necessary to carry out reform exploration and practical research on the teaching of "Introduction to Environmental Science". By integrating carbon neutral policies, empowering course content, teaching mode and teaching method through the internet, and innovating the teaching model of "teaching and discussion", the teaching effect will gradually be improved. Therefore, it can help students to understand the development history, core theories, basic methods and subject frontiers of environmental science, strengthen their environmental ethics and awareness.