Based on diversified intergenerational living arrangements in the city,this paper studies the characterization and formation mechanism of family intergenerational relationships in the Chinese society. The results show that the subject of intergenerational relationship seeks individual freedom,while subjected to a set of everyday life logic of family responsibilities,such as filial piety,and the limitation of social support with regard to elderly care and child rearing. The family intergenerational relationship thus becomes the last bastion of the individual to resist risks. Most people involved in intergenerational relationships try to balance the tensions between the social structure and the individual by selecting different forms of intergenerational living arrangements,which form unique rheological family intergenerational relations.