Siheyuan, is the traditional Chinese courtyard style building, has a long history, and is an extremely important historical and cultural heritage. It carries the folk culture of old Beijing and the history of the old Beijing. Therefore, its cultural connotation should be maintained. With the growing number of skyscrapers, construction industrialization replacing traditional construction technology today, hutongs and Siheyuan have lost their luster, most of the traditional Siheyuan have become shabby, inner vitality and old form that were the social mechanism are rotting away. Just relying on protection and repair Siheyun is far from a healthy survival. Instead development and innovation is needed for a vibrant sustainable preservation of Siheyuan. In order to make Siheyuan more comfortable, more vibrant and to achieve its sustainable development, it should be combined with modern materials and construction technology.

Abstract
 1. The Situation of Siheyuan
 2. Protection and renovation of Siheyuan
 3. The sustainable development of Siheyuan
 4. Conclusion
 References

• Peng TianXue(Beijing University of Technology Graduate Student)
• An JungHyun(Beijing University of Technology Graduate Student)
• Zhang Chao(Beijing University of Technology Graduate Student)
• Kim Junebong(Professor, Beijing Institute of Technology , President of ISO)