Abstract:Nanjing and Zhenjiang are the core cities of Nanjing Metropolitan Circle. The regional cooperation between two cities has a long history, and the demand for space and transportation integration and social identity continue to increase. Transportation integration construction is an important starting point to promote the regional integration development of Nanjing and Zhenjiang. The urban development characteristics and traffic transportation demands of two cities are analyzed. Facing the regional and contiguous areas, the current situation of transportation integration including seaport, airport, subway, public transport and roadway has been diagnosed. On the basis of analyzing the development trend of traffic integration, the implementation path of traffic integration is put forward from the aspects of integrating the seaport, strengthening the airport, integrating the subway, integrating the public transport and opening the road network.