With the continuous improvement of urban development in China, there is an urgent need to explore a new model for urban management. Big data reveals that in the current era of urban densification, the availability of land resources for green construction is extremely limited. Achieving sustainable development of green spaces and ecological areas in high-density cities, while addressing the scarcity of land and residents’ demand for green spaces, has become a crucial challenge in contemporary urban development. This study focuses on the Macau Peninsula as a representative high-density urban area and systematically examines patterns for creating urban green spaces. It identifies desirable characteristics and proposes viable strategies for green space creation, taking into account the current construction status and development vision of the Macau Peninsula. These strategies include regional connectivity, comprehensive service coverage, seamless integration, micro-green expansion, and three-dimensional greening.