The paper studiestheproblem offormation of poly-artistic activity in the period of professional formation of the future musical art teacher. It analyzes the role it plays in the process of professional learning. The author of the article makes an attempt to analyze the concept of formation of poly-artistic activity of the future musical art teacher, as well as their role in the life of a teacher-musician. The role of this process is illuminated and analyzed during the professional studies of the student. The article provides an opportunity to understand, theoretically analyze and solve the problem of formation ofpoly-artistic activity in the period of professional formation of the future musical art teacher on the basis of the notion “poly-artistic activity”. Without regard to considerable attention of researchers to this problem, on the view of the author, she remains not enough studied in the sphere of professional formation of the future musical art teacher. Therefore in the period of theoretical research the main factors of this problem were found out. Presently, there is an increasing interest in the problem of poly-artistic activity of the future music teacher as ponderable link for becoming of the future specialist. The process of forming of the pedagogical culture of the future teacher of musical art is especially necessary in the period of professional formation. In the article the main factors of decision of the problem of formation of poly-artistic activity in the period of professional formation of the future musical art teacher are exposed. It depends on the personality of the teacher, his world view and professional mastery, high level of intellect and heartfelt sensitiveness. In the conclusion of the work, the author has indicated that a future specialist must not only love music, but also understand it in sufficient volume for explanation, possess knowledge on scientific literature, constantly enrich himself with new knowledge. The following methods of research are used: analysis, synthesis, generalization, subject conversation, test, interrogatory, pedagogical experiment.