Abstract:Diaoyutai State Guesthouse is located in the Diaoyutai State Guesthouse in the middle of the lake, built in 1959, one of the ten national projects. The original building is a western-style building with yellow walls and red tiles. Due to the use function, decoration, equipment and modeling of the building do not meet the requirements of receiving state guests at the present stage, it was proposed to Reconstruction in 1984, designed in 1985 and completed in 1986. Become an important place for foreign affairs activities in China. The VIP building covers an area of 16,750 square meters, with a construction area of 7,500 square meters. It has a two-story brick and concrete structure, with a total of 35 presidential suites and accompanying guest rooms, as well as welcoming hall, waiting hall, meeting room, negotiation hall, four seasons hall, large and small restaurants and life services and other facilities. In the architectural modeling to imitate China's Qing architectural style, in harmony with the garden, The style is elegant and magnificent, the building own modern equipment.The main structure of the building retains the original brick-concrete structure system, and the load-bearing wall of the main room is reinforced with cement mortar surface layer and strengthened with connection of components to enhance its seismic performance. The north gate, welcome hall, reception room, dining room and presidential suite are all reinforced concrete beam column structures. The roof and the porch and pavilion in the courtyard adopt a wooden structure. Reinstall heating, air conditioning, water and water supply, sanitary ware, hot water, gas, lighting, TV, communication, fire warning and other facilities. Interior decoration according to the function of each hall, the wall, ground, ceiling for modern decoration, highlighting the magnificence style. White walls and gray tiles, verandah pavilions, stacked rocks, artificial waterfalls, streams and plants make the courtyard harmonious with the building. The purpose of the reconstruction is based on modern technology, to meet the use requirements for spiritual life needs of guests and shape the image of Chinese classical architecture.