Based on CLHLS data from 2017 to 2018,this paper empirically analyzes the impact of intergenerational support on the elderly health by using PSM statistical method, and compares the group differences of various types of the elderly through sub-sample estimation.The results show that,there is a significant effect on the health of the elderly both intergenerational emotional support and daily care respectively,and the health promotion effect of daily care is significantly higher than that of emotional support. Further heterogeneity analysis shows that intergenerational support can effectively improve the health level of the oldest elderly and rural elderly; intergenerational emotional support has a positive effect on the health of the elderly living alone and living at home respectively,and daily care can improve the health of the elderly living in the family. Under the background of increasingly severe aging situation,we should actively deal with the problem of the elderly’s health,give full play to the advantageous roles of family intergenerational support,and accelerate the improvement of public old-age service system.