With the deepening of modernization， the ethical and functional integration of rural families is no longer sufficient to present the rich orientation of family transformation. Field research revealed that matrilineal bias in family integration patterns emerged in the daily life practices of rural three-generation families, which is characterized by matrilineal bias in daily interactions, matrilineal bias in resource integration,and mother-in-law and daughter-in-law’s cooperation in child rearing. In the matrilineal-biased integration practice， the support of emotional legitimacy in the family with few children constitutes the integration space， the emotional strategy under the family interest needs serves as the driving force for integration， and the emotional resources of young women under the contingency structure become the integration advantage， highlighting the pattern of emotional integration and family order that favor the matriarchal families. The emergence of emotional integration indicates that the emotional structure is sufficient to become the foreground force influencing family patterns. Chinese families are beginning to shift from father-child oneness to parent-child oneness， and the emotional weight of family function fulfillment is becoming explicit. In the dual lineage interaction， the female is beginning to emerge implicitly due to the advantages of emotional resources. This suggests that the emotionalization and intimacy of the family is another important orientation of understanding the practice of family modernization.