Abstract: Beijing old city hutong has a long tradition of green space construction. As the main body of green space renewal, community residents have great spontaneity and initiative in this respect. As the government promotes the policy of “reserving open space and increasing green area” in the city, the “bottom-up” micro-renewal of green space based on residents' spontaneous renewal has been getting more and more attention. Giving full play to the residents' spontaneity is of great significance to the preservation of the authenticity of community life, landscape management and maintenance, community strength cohesion. This paper firstly sorts out the development process of the community organization form in Dashilar area, analyzes the types and organization patterns of the existing hutong green space, and expounds the challenges faced in the renewal process. Then, with field research results, it analyzes the characteristics of the planting space, construction materials and plant selection in hutong under residents' spontaneous renewal. Finally, with specific cases, it discusses the ways of realizing green micro-renewal in hutong under the residents' spontaneous renewal perspective in terms of organizational forms, greening modes and thought innovation, and summarizes the green space micro-renewal experience.