Abstract:Diaoyutai is one of the famous garden monuments in Beijing, with its pedestal and architecture still in good condition. In 1959, a state guesthouse was built around here, and Yangyuanzhai and West Garden were merged into the hotel and became the world-famous "Diaoyutai hotel". The design principle of Yangyuan Zhai is (1)keeping the characteristics of Chinese garden architecture, according to the specifications of Qing Dynasty palace and in harmony with the original buildings; 2) In accordance with the old system at the same time to reform, innovation, in order to meet the requirements of modern use; 3) Protect the original natural environment, try to reduce or not cut trees, especially old trees that can not be cut. The design principle of the West Garden is to transform the existing building into a set of high-end guest rooms imitating Qing Dynasty style palace. The garden design adopts the practice of water management and bank protection. Bridges and roads have their own characteristics.