Traditional Ecological Knowledge" is a cross-disciplinary study that combines with humanities and natural sciences, derived from the wisdom of life accumulated by the ancestors' long-term learning within nature. More and more advanced countries have applied traditional ecological knowledge to keep and increase the cultural diversity and biodiversity on different fields, such as Satoyama environmental management, ecotourism, and natural resource management of National Parks recently. It is a pity that in the past, it was gradually lost in Taiwan without being valued by the public. This course is designed to enable students to value and learn to apply flexibly through the understanding of traditional ecological knowledge. The content of the lectures is mainly the definition of traditional ecological knowledge at different levels and application examples around the world, such as pharmacy, agriculture or recreation. In the course, the traditional ecological knowledge unique to Taiwan's aboriginal people will be shared. In addition to introducing the local ecology of flora and fauna applied in traditional daily life (construction, food, hunting, medicinal, etc.), it also includes Aboriginal culture. The beliefs, legends and sustainable management of the natural ecology, so that students can explore the highlights of Taiwan's local cultural characteristics. The course is taught in a class, but in order to impress the students, they will try to show or share the actual cases in kind. The application experience of traditional ecological knowledge is also carried out in the internship course. This course is designed to enable students to recognize the value of traditional ecological knowledge, to respect multiculturalism, and to learn the humility of the aboriginal ancestors learned from nature and the eternal survival of coexistence with nature.