The aim of the study was to indicate the character of the relationship in psychotherapy supervision. A review of the literature on supervision psychotherapy was carried out for the years 1983-2015. Different ways of approaching this issue were introduced in this article. Roles, typical tasks, and functions of a supervisor’s activities were also explained. The supervision matrix (Watkins, 1997) and supervision triangle (Newton, 2012) were used to describe the roles and functions of the supervisor. Being a teacher, an expert, a therapist, a colleague depends on the stage of the supervision process. Working alliance, parallel process, self-disclosure, and countertransference were described in the context of developing the supervision relationship. Working alliance can improve the quality of the supervision relationship. The similarities between psychotherapy and supervision contribute to the formation of the parallel process and countertransference of the supervisor. It is important to determine the scope of the supervisor’s self-disclosure. More frequent self-disclosure can strengthen the bond with the supervisee. Some major ethical categories that should be present during supervision are also presented. Currently, the supervision relationship is considered to be a crucial and probably the most important factor that impacts the effectiveness of the supervision process.