The purpose of this study was to investigate the effectiveness of art therapy programs used for children with attention deficit hyperactivity disorder (ADHD). Twenty-six articles were selected from theses and journals from 2000 to 2017 and meta-analysis was performed adopting Comprehensive Meta-Analysis (CMA) version 2.0. The validity of the study result and the size of the effect were verified by analyzing the effect size, the effect size heterogeneity, and the publication error. The result revealed that the overall effect size of art therapy interventions was large (g=1.39). The largest effect size caused by the dependent variables was hyperactivity (g=1.53) followed by attention deficit (g=1.34), emotional stability and sociality (g=1.16), and self-growth (g=1.11). A moderator analysis was performed to explore the heterogeneity of the overall effect size and it showed that design types, grades of participants, publication types, object types, sample sizes, and lengths of session time were not statistically significant. The number of sessions provided was, however, statistically significant, and the longer the session, the greater the effect size. Finally, a publication bias analysis was undertaken to verify the validity of this study, but no significant bias was found to overturn the entire study. These results confirm the effectiveness of art therapy for both secondary problems and primary symptoms of ADHD children and provide the basis for more effective art therapy programs