Tourism environment teaching includes natural tourism environment teaching, cultural tourism environment teaching, and economic tourism environment teaching. The tourism environment and resources are closely related to sustainable development. This article briefly presents the theory and principles of sustainable development. Using the animal and plant environment and resources of Mount Emei, Sichuan Province, China, as a case, this study displays the sustainable development concept and method of bio-tourism environment teaching. It proposes that humans must protect the diversity of flora and fauna of Mount Emei and treat ancient varieties and young varieties equally. Tourists and monkeys should live in harmony. This article emphasizes class group discussions. The discussion should be question-oriented, such as what concrete measures are needed for humans to live in harmony with monkeys.