Relocation, an important means of targeted poverty alleviation, aims to implement resettlement in a planned way through administrative means and solve the dilemma of “the region cannot support its people”. However, due to their health, educational level, language ability, livelihood mode and income level, the relocated elderly immigrants face varieties of challenges in the relocation site. In a post-rural society characterized by marketization and new urbanization, the relocated elderly immigrants not only face social adaptation and integration into their new homes, but also the changes in their livelihoods, intergenerational support, and pension models. The frequent population movement and going upstairs lead to the serious hollowing out of immigrant communities. As such, they are separated from the land and intergenerational support and turn to the old-age strategy that pursues self-protection and social support. Meanwhile, the coreization of the family structure makes the pension space evolve and expand gradually from families to selves, from families to communities, and from communities to society. It is therefore necessary to improve the self-care ability of the elderly immigrants, create communities with intergenerational harmony, improve the policies in support of the elderly, actively promote mutual assistance and social services, and secure the elderly immigrants’ pension security and social integration.