According to the ventilation and heat issues of Beijing Capital International Airport T3 Terminal Station Transportation Center (GTC), based on the actual conditions of the building structure, geographical location, climate and other characteristics, the internal environment of temperature and other issues are analyzed and researched. And the relationship of indoor air flow and interior space of the building is established. With methods of CFD, and from the perspective of the Energy Saving and Environmental Protection, natural wind and related technology are utilizes, and natural ventilation and heat transferring guidance systems are designed, so that the internal temperature is reduced and the indoor comfort is improved. Introduction Beijing Capital International Airport is located on a piece of land of Chaoyang District on the northeast of Beijing, 25.35 km from Tiananmen Square. It is the busiest transportation and production major international airports of China, on the most important location, with the largest and most complete equipment. Beijing Capital International Airport T3 Terminal Station Transportation Center (GTC) is located to the south of the T3 Terminal Building, with total construction area of more than 34,000 square meters. 1,2-floors underground are open-large parking garage, the first floor has multi-hub facilities supporting the airport, and the second floor is suburban railway stations. The roof is a glass dome, and used long-span structures. The main functional area is a large space, and the external structure for large area is glass walls. The form is determined by functional requirements of the terminal station and visual and psychological demands of people. More precisely, the form not only is a concrete manifestation of humanized design, but also brings the problem of high energy consumption.