This paper makes a deep research on the energy -saving issue in designing the air conditioning for the travel hotel, high-quality office buildings, senior restaurant and luxurious apartments. It also put forwards the reasonable plan of architecture building is the host means of energy saving , and the layout design of air-conditioning refrigeration and the selection of equipment are critical to energy saving for building. How to research and develop utilization of the new energy is the important factors for energy saving. Especially point out energy saving is the deep-concerned central discussion theme.