The professional development of a teacher and his/her methodological competence is a purposeful process that influences the qualitative changes in all elements of educational activity. One of the important conditions for the professional development of a teacher is the teacher's participation in pedagogical competitions. The article reveals the importance of pedagogical competitions in improving the competence of a teacher, analyzes the competitive route of teachers. The aim of the research is to reveal the influence of the pedagogical competition on the improvement of the teacher's professional competence. The methodological foundations of the research were the provisions of the andragogical approach; the provisions of the subject activity-oriented approach, allowing us to turn to the subjectivity of the teacher, to the analysis and introspection of his/her educational needs, to the motivation of development and self-development. The scientific novelty of the research consists in clarifying the classification of the types of teachers’ professional competitions, highlighting the specifics of each type of competition. The theoretical significance of the work is due to the fact that the results of the study can serve as a basis for other scientific works in this field. The practical significance is due to the fact that the results of the research can be used for educational purposes, as well as for motivating teachers to participate in pedagogical competitions. The article made it possible to conclude that participation in pedagogical competitions is aimed at intensive and effective reflection of the problems discussed at the competitions. Collaboration of teachers with participation in pedagogical competitions contributes to the exchange of experience between educators, demonstration of their research works, and improvement of their professional pedagogical skills.