| With the change, improve the level of urban development of the times, continue to expand the production of power and science and technology, social and economic integration to the city brought profound changes. Central urban space becomes increasingly strained, resulting in ecological imbalance, such as the center of the city with heavy traffic, human life entertainment cramped sharp deterioration of the ecological environment. This series of questions presented, must be to ease the entire ecological footprint through the rational use of urban space, so that both can fully satisfy scarcity of land resources of the state, but also can serve as an advantage in future construction and renovation in the central city. Future development of urban space should not only reflect the diversity, but also to highlight the systematic overall space, so that the ground level environment alternating with three-dimensional subsurface environment, the integration of all the factors to make room for composite, widely shared space to improve the state of the city, to avoid simplification of shaping urban space, this article from the city shared space design theme start rational planning space utilization hybrid approach and three-dimensional design requirements to develop from a single ground or underground to integrate ground and underground systematic design, and its in-depth study of the whole interior.Throughout human history found in different countries to the existing underground space development have different degrees of use, better use should be some developed countries abroad, especially public shared use of underground space environment more, for China is concerned, we need to vigorously develop land resources, on the basis of no harm to the ecological balance, rational planning of land resources to increase utilization of the urban space, so the underground environment and the earth and environmental development.This paper first for the situation and development prospects of urban underground environment to be considered a shared space, urban space in complex underground environment planning, research planning factors compound needed and the necessary conditions to inside the building designed with critical levels is analyzed, and humane considerations, the investigation of the case was analyzed, integrated use of space within the city to ease the contradiction, the final findings may be reasonable for the future planning and construction of urban underground space environment proposed share practical recommendations. |