Abstract: As one of the world's leading metropolitan areas, the development of the Tokyo metropolitan area represents the modernization of Japan, and it also reflects the predicament of urban governance in the era of metropolitan areas. Crossregional collaboration such as the Summit in National Capital Region was a new model of governance in metropolitan era. Without changing administrative system, the summit formed the crossregional collaborative system, which coordinated relations between city governments, and provided the platform for public and enterprise participation. This paper analyzes the gains and losses in the process of crossregional governance in Japan so that it can have some implications for the governance of metropolitan areas in China.

Key words: Tokyo metropolitan area, crossregional collaboration, the Summit in National Capital Region, innovative model