This meta-analysis examines the relationship between childhood trauma and internet addiction among adolescents. The study searched multiple databases from their inception to December 31, 2022, and included 19 studies involving 21,398 adolescents. The results indicate a strong positive association between childhood trauma and internet addiction (r = 0.395, 95% CI [0.345, 0.442]). The relationship was moderated by sample size, survey area, and internet addiction measurement tools. Significant differences were observed based on various child trauma measurement tools and study quality scores. However, interstudy heterogeneity was not significantly affected by study year, sample source, or participant age. The study concludes that internet addiction is positively correlated with childhood trauma and emphasizes the importance of providing a supportive family environment to prevent and reduce internet addiction. However, the limited number and low quality of included studies suggest the need for further high-quality research to validate these findings.This meta-analysis examines the relationship between childhood trauma and internet addiction among adolescents. The study searched multiple databases from their inception to December 31, 2022, and included 19 studies involving 21,398 adolescents. The results indicate a strong positive association between childhood trauma and internet addiction (r = 0.395, 95% CI [0.345, 0.442]). The relationship was moderated by sample size, survey area, and internet addiction measurement tools. Significant differences were observed based on various child trauma measurement tools and study quality scores. However, interstudy heterogeneity was not significantly affected by study year, sample source, or participant age. The study concludes that internet addiction is positively correlated with childhood trauma and emphasizes the importance of providing a supportive family environment to prevent and reduce internet addiction. However, the limited number and low quality of included studies suggest the need for further high-quality research to validate these findings.