The article deals with the problem of pedagogical self-efficacy, which is closely related to the search for new ways to improve pedagogical activity, to increase the level of professionalism and competitiveness of the future teacher. The author investigates the essence of this concept, its role in the professional development of future teachers, determines the factors and mechanisms of development of pedagogical self-efficacy of future music teachers, in particular: previous experience of success and failures, observation of students’s observation of professional achievements of other people, verbal belief, physical and emotional state of personality, self-cognition as a futuremusic teacher, self-regulation, etc.