By means of literature research and case study, this paper combed foreign libraries’ the service ideas and cases of promoting intergenerational integration in the context of aging and put forward the thought of domestic libraries’ providing the service of intergenerational integration: set up the service ideas of strengthening intergenerational communication and promoting intergenerational integration,  carry out diversified intergenerational activities and programs according to the needs and features of each generation group, complete intergenerational service room and resource allocation and make good popularization and evaluation of intergenerational programs.