The purpose of this study was to examine the art therapists’ experience of art therapy supervision, focusing on art, and to examine the meaning of the experience phenomenon. For this study, oral and picture data were collected from 12 art therapists through face-to-face and non-face-to-face one-to-one interviews from June 2019 to May 2021. As a result of using van Manen's hermeneutic phenomenological research method to analyze the interviews, eight essential themes and 26 sub-themes were derived. The eight themes were as follows: “Art works become evidence of the scene, and supervision is enriched,” “Images add depth to the understanding of me and the client,” “Conceptualize cases with art and monitoring practice,” “Sorry for not being able to deal with art enough,” “Learning art in art therapy and growing into an expert,” “Experience being a client in the process of dealing with art,” “Art helps establish an identity as an art therapist,” and “Influenced by the supervisor's competence and philosophy.” Based on these research results, the significance and limitations of the study were then discussed.