Under the interweaving of built-up area redevelopment and land space planning, urban land tends to be intensively and efficiently constructed. As a quantitative research that can reflect man-land relationship, the balance of supply and demand of urban green space is one of the important research contents of urban spatial justice and equity, which helps to optimize the layout and quality of urban green space, and continuously improve people’s well-being. The supply-demand balance of urban green space is an important research topic for urban spatial justice and equity. Using CiteSpace software, this article analyzes the research on the supply-demand balance of urban green space in the past decade both domestically and internationally from the perspectives of origin, current hot topics, and future trends, clarifying the development path. The analysis results show that research achievements have presented three stages, with a stable increase since 2017. Current research hotspots mainly focus on the accessibility of green space, scale benefits and spatial differentiation, diverse and heterogeneous group needs, fairness and justice, etc. In the future, research can be deepened in the following areas: shifting from supply-side planning to demand-side optimization, extending green space units from cities to communities, presenting interactive diversity and green scenarios, and converting supply-demand balance to matching.