The purpose of this study was to rehabilitate the experience of art therapy, and the meaning and essence of art therapy with ‘an adolescent under probation' by an art therapist. In order to explore the experience and meaning of the therapist in the three-way relationship among the probation juvenile, the art therapist, and artwork, the art therapist studied autobiographically. For this study, data was collected from the interview of the youth in the art therapy and the therapist’s journals from September 2019 to November 2022. The experiential stories discovered in this process created the meaning of ‘getting rid of prejudice about juveniles under probation’, ‘developing empathy through art work with clients’, and ‘getting to know the value of client’s life’. As a result of the investigation, first, the art therapy was a space to get rid of prejudices about juveniles under probation and to share the special feelings between the client and the therapist. Second, the art therapist experienced sincere empathy and growth by using their emotion as a therapeutic medium. Third, the natural communication change of the client with the therapist was expanded during the art therapy process. Fourth, the art therapist continue to make self-reflectional efforts to grow as an expert. Based on these contents, the significance and limitations of this study were discussed.