Objective:The effects of physical activity on academic performance of children and adolescents were analyzed quantitatively by the meta-analysis.Methods:Twenty-four literatures(the total sample were 8700)met the included criteria were selected from major databases,and using the software of CMA2.0to analysis and process effect sizes.The results of meta-analysis showed that 1)To some extent,children's and adolescents' physical activity had a positive effect on their academic performance,the average effect siz...