Objective: To systematically analyze the association between dairy products intake and overweight and obesity in children and adolescents, so as to provide evidence for the control of overweight and obesity in children and adolescents. Methods: Retrieve between January 2013 and October 2023, the relevant research literature about milk and its products of the relationship between intake of child and adolescent overweight and obesity were collected, from China National Knowledge Infrastructure(CNKI), Wanfang, PubMed, Web of Science, Embase, and the Cochrane Library databases. Taking OR and 95% CI as effect indicators, quality evaluation and data extraction were conducted by using the inclusion and exclusion criteria, Revmam 5.4 software was used for test for heterogeneity and publication bias analysis. Results: A total of 19 articles were included, including 11 cross sectional studies, 4 cohort studies, 3 randomized controlled studies, and 1 case-control study. A total of 109 661 participants were included. The results of Meta analysis of cross sectional studies showed that the total intake of milk and dairy products was not significantly associated with obesity in children and adolescents ( OR =0.91,95% CI =0.76-1.09, P >0.05). However, liquid milk intake was negatively associated with overweight and obesity in children and adolescents ( OR =0.82,95% CI =0.74-0.91, P <0.01). The Meta analysis of cohort studies showed that milk and dairy products intake were negatively associated with obesity in children and adolescents ( OR =0.59,95% CI =0.45-0.79, P <0.01). Randomized controlled studies supported the effects of milk and dairy products intake on children and adolescents with overweight and obesity, while case-control studies showed an inverse association ( P <0.05). Conclusions The intake of milk and dairy products is associated with overweight and obesity in children and adolescents. Measures should be taken to guide children and adolescents’ milk intake behaviors to prevent childhood overweight and obesity.