The purpose of this study was to investigate the effects of group art therapy using picture books on empathy and interpersonal problem solving ability in children. The study subjects consisted of 12 children in the lower grades of elementary school living in G city, 6 in the experimental group and 6 in the control group. The experimental group received a total of 12 group art therapy program sessions once a week. As measurement tools, the empathy ability scale and the interpersonal cognitive problem solving thinking scale were used. During analysis, the Wilcoxon signed rank test was conducted to verify the effectiveness of group art therapy. Qualitative analysis described the changes in children s empathy and interpersonal cognitive problem solving ability during the session. As a result, first, group art therapy using picture books had a positive effect on improving empathy in children. Second, group art therapy using picture books had a positive effect on improving children s interpersonal problem-solving ability. Third, with respect to qualitative changes, in the early stages of art therapy, there were often conflicts situations. As the more sessions passed, a change in empathy and respect for others was observed while coordinating opinions. Therefore, group art therapy using picture books can have a positive effect on children s empathy and interpersonal cognitive problem solving ability. Based on this research, the implications and limitations of this study are discussed.