The small and micro community spaces under the conditions of high density and complex terrain carry diverse ecological space attributes and rich natural education value. Based on the optimization of carbon performance and the correlation between different representation indices and carbon performance, this paper quantifies the spatial carbon sink, carbon emission, and carbon performance in detail from the perspective of the whole life cycle of small and micro spaces in the community, and through the path of public participatory science popularization, and finds that the carbon sources in the two processes of material production and transportation, and green space operation, maintenance and management are the primary sources of carbon emissions. Furthermore, multivariate analysis was carried out by combining landscape index evaluation and carbon performance, and it was found that there was a significant relationship between canopy density and carbon performance in small and micro spaces. Combined with the practice of nature education and construction of small and micro spaces in multiple communities, it is proposed that in the whole process of “plant design, material transportation, site construction, operation and management”, the natural construction strategy of community small and micro spaces focusing on emission reduction and increase of sinks should be adopted to promote the sustainable development of green and low-carbon communities and strengthen the organic connection between people and the environment.