This paper makes analysis on the legacies of Beijing Olympic Winter Games，arguing that the Games will bring three aspects of unique legacies. Firstly，the Olympic Winter Games will leave a number of high-quality Olympic facilities. Secondly，the Olympic Winter Games will significantly improve the development of winter sports in China，supporting the realization of economic transformation. Thirdly，the Olympic Winter Games will promote Beijing-Tianjin-Hebei collaborative development，realizing complementary advantages and win-win cooperation between Beijing and Zhangjiakou.