This study applied Max van Manen s hermeneutic phenomenology method to investigate its meaning and essence, focusing on the experiences of students who took supervision established as a subject in the undergraduate course of art therapy major. There were eight participants in this study, and data were collected through three in-depth interviews from October 2, 2019 to November 13, 2019. The researcher focused on the experiences described by the participants in the interview contents collected along with the works of art of the research participants about the supervision course experience. Based on the collected data, the results of four entities (physicality, spatiality, relationality, and temporality) were derived and divided into nine sub-themes. As a result of the study, undergraduates majoring in art therapy were able to not only respond to the supervisor s guidance in an active manner, but also were able to perceive personal experiences as joint experiences in supervision course. In addition, they expressed a sense of accomplishment in participating as an expert in successful dialogue experiences through art work. Based on these results, we discussed the experiences that undergraduates had when they were paticipating in the supervision course, and made specific suggestions based on this.