BACKGROUND AND AIMS: This study aims to comprehensively evaluate the correlation between parental affective disorders and four common digital addiction in children and adolescents. METHODS: The research was conducted in MEDLINE, PsycINFO, Embase, CINAHL, and Web of Science. The meta-analysis included studies focusing on parental affective disorders and digital addiction to the Internet, smartphones, social media, and gaming among children and adolescents, using longitudinal, cohort, or cross-sectional study designs, and reporting correlation effect sizes or other data that could be converted to correlation r. Pooled Pearson's correlations were calculated using the random-effect model. RESULTS: Nineteen studies were included (sample sizes ranged from 104 to 4,385), with ten on gaming addiction, four on smartphone addiction, three on Internet addiction, and two on social media addiction. The meta-analysis revealed a small but significant correlation (pooled r [95 %CI] = 0.15 [0.11-0.19]) between parental affective disorders and digital addiction in children and adolescents. This correlation was stronger in studies focusing on offspring's smartphone addiction (r [95 %CI] = 0.25 [0.17, 0.33]), and studies conducted in Asia (r [95 %CI] = 0.17 [0.12, 0.22]), and increased slightly from 0.09 to 0.10 to 0.15-0.16 by years in 2017 and 2024. DISCUSSION AND CONCLUSIONS: Parental affective disorders were positively correlated with offspring's digital addiction, particularly on smartphone addiction and in Asian families. Improving parental mental health as a complementary strategy of clinical treatments might be more effective in reducing digital addiction in offspring. Further research is needed to explore the potential underlying mechanisms to gain a deeper understanding.