From the perspective of active aging, the work aims to combine the special physical and psychological needs, behavior habits and lifestyle of the elderly to discuss the challenges and opportunities of community home-based elderly care in infrastructure construction and service provision based on community participation. Focusing on the extra value and social participation of the elderly, a community service platform is built. Based on the principle of "mutual support and co-construction", attention is paid to the transformation brought by the combination of physical space and social environment to the physical and mental health of the elderly, the realization of social value and the social integration support. On this basis, the corresponding strategies of service design are proposed to provide a new interpretation context and means guidance for the elderly care based on social participation and mutual support in the new era. The elderly can spontaneously organize activities through the mutual support platform and interact with the residents of all ages in the community. Contact points such as the activity kit and community bulletin board are designed to break the barriers and vitalize the life, thus meeting the diverse needs of the elderly. In addition, social forces are mobilized and encouraged for broad participation, which is committed to expanding and deepening the elderly care service with the goal of spiritual prosperity, and providing support for theoretical research and practice in relevant fields.