Green，low-carbon and sustainable development are the key themes of today’s era. Large-scale sports events have always attracted attention from all walks of life due to the long preparation period，numerous new construction projects，large capital investment，resource and energy consumption，and their short-term and long-term impacts. The sustainable use of venues，related infrastructure and service facilities after the Games is the expectation of all sectors of society and the public. This article focuses on 10 successful cases of the sustainable practices of the Olympic Winter Games Beijing 2022，and through case studies，shares the good practices and successful experiences of the sustainability of Beijing 2022 Games.