The increase in the number of young and middle-aged workers in rural families migrating to urban areas to work and the impact of the "three-child policy" have made intergenerational care more and more common in rural areas. Based on the data from the 2018 China Health and Elderly Care Longitudinal Survey (CHARLS), this chapter uses OLS and 2SLS regression models to study the effects of intergenerational care in rural areas on self-rated health status, impairment of daily activity ability, and mental health of middle-aged and elderly people. The results of the study found that the provision of intergenerational care had no significant effect on the self-rated health of middle-aged and elderly people. There are positive effects on both impairment of daily activities and mental health. Heterogeneity showed that the effect of women and older adults was more significant than that of men, and age heterogeneity was mainly manifested in the ability to perform daily activities. Therefore, at the family level, the value and role of middle-aged and elderly people in family life should be reasonably brought into play, and at the same time attention should be paid to the physical and mental health characteristics of different ages. At the social level, we should improve the security systems such as medical insurance and endowment insurance, and introduce policies and systems and economic compensation measures for middle-aged and elderly intergenerational care families, so as to give play to the more positive role of rural intergenerational care in the health of middle-aged and elderly people.