The Historic District of Macao has distinct characteristics of the integration of Chinese and Western cultures. It is one of the few residential world cultural heritage sites in my country. It is currently in a critical stage of rapid development and transformation into a tourist city. However, the Historic District of Macao, which is in urgent need of development, has realistic problems such as insufficient vitality of the historical district, underutilization of public space, and lack of sense of belonging of residents. It is in urgent need of urban renewal. Public space is the key interface for the renewal of the Historic District of Macao.