Objective:To explore the influence of intergenerational relationship on their mental health status in China and pro-vide a basis for improving the mental health status of old adults.Methods:Based on the 2018 China Longitudinal Aging Social Sur-vey,multiple linear regression models were used to analyze the effects of multidimensional family intergenerational relationships on mental health status in old adults,and sub-sample regression was utilized for heterogeneity analysis.Results:63.29%of old adults contacted their children at least once a week,87.65%thought they were close to their children and only 18.20%of old adults and their children had different views.Old adults(80 years old and older)had worse mental health status than younger people(60-69 years old)and needed more family support.Affectual solidarity had a significant increase in the mental health status of old adults(β=0.98、1.20,P<0.05),and consensual solidarity was conducive to improving the mental health status of old adults(β=0.24,P<0.01),but only works significantly for women(P<0.05).Conclusion:The intergenerational relationship with higher degree of af-fectual solidarity and consensual solidarity is more conducive to improving the mental health status of old adults,and the influence of specific family intergenerational relationship dimensions on the mental health status of old adults with different characteristics is different.