Study On The Integration Of Underground Space In Mianyang People’s Park District

China’s urbanization enter the stage of rapid development, the cit y’s problem has become increasingly prominent, medium-sized cities are experiencing many large cities have experienced a stage of development.Land Resources contradiction become intensiveinurban centers, high-density, high-volume ratio, highly centralized functions b ring a series of contradictions. On the one hand, economic development requires more land to meet the expansion of commercial, transportation and other space, on the other hand, people have higher requirements for the urban public open space and urban landscape,so people began to expand the underground space.In the early underground space utilization, this expansion is unplanned autonomous, and indeed ease some contradictions within a short time, but in the long run, underground space utilization efficienc y is not high. Underground space and ground space formed separatism, the ground developed orderly, but the underground lack of overall planning.Also the development of underground space itself has irreversible nature, compared to the ground, the underground is much more difficult to reform. Without the intervention of the new conditions, this studyfocus on how to use the existing space resources and build the effective link, made the underground space to play a more efficient role.Based on the the underground space researchofapart of Mianyang city center, summed up the problems of existing underground space resources, to analyze the problems arising from aspects of function, spatial organization and so on.On the basis of theoretical study and learn from the development experience of big cities onundergroundspacehas proposed some integrate ideas and strategies to improve the spatial quality of the region.