The position of four municipalities directly under central government should be carefully examined to find the shortcomings of Chongqing in urban function and to find restriction factors for further development in order to correctly select development strategy and promote urban function.Chongqing,as an old industrial site,should stick to the idea that "industries are the basis for promoting Chongqing and innovation is the source of development force" and should make efforts to establish national strategic industrial sites and national industrial sites.Establishment of national strategic industrial sites and national level sites needs the carrier which has excellent development environment and strong adopting ability.Development Zones of municipality level in metropolitan circle should have the function for adopting national industrial sites.