Abstract: Regional development needs center city, and urban development needs regional supports.Constructing Capital Area is necessary to harmonize south-north economy pattern in China, to drive an area around Beijing to develop, and for Beijing to develop sustained and to add into world city rank.This paper focuses on how China Capital Area develops.Capital Area is reconstructed to four new-relation area in this paper:(1)Knowledge Economy Area.It’s the core of Capital Area, which includes Beijing and Tianjin.The major industries are tertiary industry, hi-tech industry, and low-pollution industry.The Knowledge Economy Area will be the headquarter in Capital Area.(2) Tourism & Culture Area.This area includes Beijing, Baoding, Chengde, Qinhuangdao.(3) Industry Economy Area.It will be industry economy base of Capital Area, which includes Tianjin, Tangshan, Langfang, Baoding, Zhangjiakou, Cangzhou.(4) Out-contact Network.Division and Cooperation will drive Tianjin, Tangshan, Qinhuangdao, Cangzhou to a series of port-cluster with different scale and function in Capital Area.Combined with reality, this paper advances three development strategies:(1) Network Strategy in Spatial Relation.On the one hand, we should construct infrastructure network.Capital Area can works only based on convenient spatial relation between inside and outside of Capital Area.Construction of infrastructure network helps to form good labor division between areas.Of course, communication establishments are included.On the other hand, we should also construct market network in Capital Area.In Beijing, we should plan and build a set of markets with the level of the first rank in the world to enlarge communication with the world.In Tianjin which is the trade center, commercial center, extroversion economy center, we should plan and build regional integrated markets and special markets, like futures market, money market, etc, to enlarge communication and trade in North China.In the other cities, some regional markets should be planned and built to facilitate fluxion of different economy stream.(2) Scattering Function Strategy.First of all, it means scattering industry in Beijing.Industry in Beijing should adapt to the function of Beijing, i.e.political center, culture center, foreign communication center.Tertiary industry and hi-tech industry would be the major industries in Beijing.Heavy industry can be transferred to Tianjin aptly.Mechinery industry can be transferred to Tangshan.Qinhuangdao can develop tourism and culture industry to release the pressure of Beijing.Besides industry scattering, subordination function of politics center can be scattered in Capital Area.(3) Internationalization Strategy in Spatial Structure.It includes three sub-strategies:world region strategy, twin-core Metropolitan Area strategy, and world city strategy.Under the conditions of economy globalization, Beijing needs a strong Capital Area to support developing to add in the first rank of world cities, and in the meantime, Capital Area needs Beijing to drive developing to a world region.