This article provides an outline of empirical studies on acceptance and commitment therapy （ACT） for children, and discusses the direction of further research in this area. ACT is one of the “third-wave” cognitive behavioral therapies that are based on the mindfulness approaches. ACT for adults has growing empirical studies demonstrating its efficacy. During the past few years, an increasing number of studies have shown its utility for children. ACT intervention is effective for not only childrenʼs mental illness but also their psychological problems resulting from physical illnesses. Furthermore, there have been school-based ACT interventions in a community sample of students, in which the intervention provided a positive effect on student psychology and their academic achievements. Therefore, it can be expected that ACT for children is effective in not only primary prevention, but also secondary and tertiary preventions. Especially, ACT focuses on helping people develop their lives according to their values, hence it not only decreases childrenʼs negative emotional responses, such as stress and anxiety, but also increases positive psychological characteristics, such as increased well-being and self-efficacy. However, there have been yet few studies that examined the effectiveness of ACT for children, therefore more research is needed to explore the effectiveness of various interventions on various aspects of childrenʼs psychology. [ABSTRACT FROM AUTHOR]