Along with the city expansion, people everywhere can see concrete buildings, more and more concrete used in tall buildings and office building, the building property investment give people create lots of wealth, but has been most building investment have been used in the function of the building construction, and to ignore the visual appearance and environmental protection consideration. In densely populated areas of the design planning of introducing the concept of green roof, in order to create more "natural space", for people to build a leisure living environment.

Through trial and error, architects and habitant found many this kind of green roof system the benefits of green roof garden reduce the peak flow when the heavy rain, the emergence of the drainage system to prevent the phenomenon of overflow, to reduce the drainage pressure, be saving water recycle