On June 5th, the World Environment Day, about 300 college students from 30 countries around the world gathered at the 1•29 Auditorium of Tongji University to attend the 2017 International Environment and Sustainable Development Student Forum whose topic was “Human and nature are closely related.” Students focused on four issues, including “ecological system and wild animals, sustainable development education and the United Nations, and ecological city and green lifestyle” and they shared their newest practical experience as well as their ideas with each other.