Abstract:The report of the 19th National Congress of the Communist Party of China clearly puts forward the requirement of “to carry out strategies such as creating green campuses, green homes, green communities, green outings” . However, in recent years, China's continuous implementation of the policy of college students expansion, resulting in serious shortage of university infrastructure, campus land tension, which has a huge obstacle to the development of China's green campus. At the same time, there are many college green space is idle, In this study from the green campus development concept to improve the efficient use of space, choose the southwest forestry university library around the green space as the landscape update design object, found the site “space inefficient and waste” problem. With the theme of “Green Space-Time of Library”, the landscape transformation design of the site, improve the daily operational efficiency of the site, summarize the landscape design strategy of the efficient use of green space in colleges and universities, so as to further realize the green development goal of the university campus.