Actively responding to population aging is the leading direction of national policy. Beijing has a large scale，a high proportion of young people，good health quality，a higher education level than the whole country，and a higher level of social participation. Among them，the proportion of public welfare participation is the highest，especially represented by formal voluntary participation，family participation and political participation are also more active，and economic participation is relatively the lowest. The types of social participation of the elderly in different places and types of residence are different. Self-realization，rewards and free choice are the main motivations for the elderly to participate in society. Physical or economic conditions do not allow，inconvenient transportation，lack of support and personal preference are the main reasons that hinder the elderly’s social participation. Improving the living environment and improving health will help the elderly to achieve high participation in society. To this end，policy makers of the aging policy should actively adjust their negative perceptions of the elderly，and comprehensively strengthen support for the participation of the elderly through national conditions education，lifelong education，health promotion，and smart elderly care，and enhance the elderly’s participation in social development. Ability and opportunity to effectively promote the development of the modernization of Beijing’s aging society governance capabilities and governance system.