This phenomenological study examined the experiences of art therapists who have worked with children with brain lesions. This study aimed to understand the significance of treating children with brain lesions and explore the implications for art therapists’ education and clinical practice. To this end, five art therapists were interviewed one-on-one, and the collected data was analyzed using Giorgi’s phenomenological method. Following the results of the analysis, a total of 312 semantic units were derived, based upon which 70 topics, 23 subcomponents, and eight parent components were determined. Participants were found capable of understanding not only children s disabilities and individual dispositions, but also the surrounding environment throughout the art therapy experience. In addition, it was found that the perspective of art therapy and children with disabilities changed as participants recognized that the process of being with the children was more important than completing art works. Finally, these experiences were summarized as the process of discovering self-efficacy as a therapist. Based on participants’ experiences, this study makes recommendations for the training of art therapists, and for future research directions, focusing on developmental rehabilitation.