With the improvement of urbanization level in China, cities begin to develop in a way where land is intensively used, space develops toward three-dimensional and multiple functions. The development of underground space is presently an important aspect of urban space development. Developing the space of orbit transportation and underground commercial is the two main aspects. The integrating design of them also brings reformation of modern urban underground space. The underground commercial space design with the integration of rail transit is favored for its safety, convenience and commercial richness. Thus it undoubtedly occupies an important position. It also can reflect whether the development of space is success or not. Therefore, it is necessary to study the design of commercial public space.This paper studies the design of the underground commercial public space, which rail transit is integrated. Firstly the paper collects and summarizes some basic theories in the process of its development and excellent cases at home and abroad. According to the current problems in the construction of our country, such as the insufficient prophase planning, internal space clutter and space quality, the paper concludes the types of design content, pattern and space connection of the underground commercial public space with the integration of rail transit, and puts forward design principles main points of space design. Finally, taking Xizhimen as an example and analyzing its underground commercial public space and current problems, the paper intends to directly apply theory to practice and optimize the public space design. |