Influence by the increasing needs of people，provide more quantities and higher quality of public infrastructure has became a important task，however，it was difficult to meet the objective demand because of the financial ability，so the goverment has facing the pressure of public service supply，on the basis of the system foundation，the merit choose from existing modles，the game result between government and developers，the advantages in public infrastructure construction，the “Mega-Development” has became an important option for the Guiyang to promote public infrastructure.