本文通过对“异居共爨”、“银发带娃”和“为子购房”三种家庭生活现象的讨论,阐述在第二次家庭模式转型中,中国传统的“反哺模式”的代际关系发生改变,抚养线路增强且被拉长,而赡养线路相对弱化。老年人牺牲自身的身心、经济等方面利益,不断增加对家庭资源的投入,在代际关系中资源向下流向年轻子女,构成代际间资源分配的不平等机制;且家庭资源流动嵌入在家庭内部的多重权力结构中。 This article discusses the phenomena of three kinds of family life such as “heterogamy,” “silver hair band,” and “for the purchase of a house.” In the second transition of family mode, Intergenerational relationships have changed, the support lines have been strengthened and elongated, and the support lines have been relatively weakened. The elderly, at the expense of their own physical, psychological and economic interests, continue to increase their investment in household resources, and resources flow downwardly to younger children in intergenerational relations, thus constituting an inequality mechanism for the distribution of resources between generations; and household resources flow is embedded in the family Internal multi-power structure.