City expansion mechanism research of Guiyang

Guiyang city in urban expansion in appeared a lot of problems,the natural environment of the restrictions、evelopment zone of the construction、he development of real estate industry、a large number of people gathered、the continuous improvement of the traffic facilies and so on,contributed to expansion of urban space.In this paper,the characteristics and the spread of guiyang city extended analysis on the reason,combined with the smart growth theory,puts forward the countermeasures and proposals.