Under the influence of modernism, the modern big cities have been suffered from the metropolitan disease for a long time. The overall image of city is cut into separate parts by various inner boundaries of city. And all kinds of closed areas in city block the possibility of interaction between people, and also form many spaces that cannot be used. As China’s urbanization enters a platform period and urban construction shifts from incremental development to stock optimization, new development needs have new requirements for urban space. With China's release of Several Opinions of the Central Committee of the Communist Party of China and the State Council on Further Strengthening the Management of Urban Planning and Construction in 2016, which vigorously promoted the block system and open communities, the opening of communities has been put on the fast track.