The article reveals the content and structure of the system of development of personal and professional maturity of future teachers in the educational environment of the pedagogical university. The personal and professional maturity of a future teacher is understood as a complex integral personal education that determines the ability to self-regulate behavior and professional activity based on subjective qualities and a formed personal and professional position. Personal and professional maturity is a general prerequisite for the effective activity of a teacher, determines the humanistic orientation of his actions and deeds, the ability to establish constructive relationships with himself and the environment, the ability to creative self-realization in the space of social and professional existence. The structure, criteria, indicators and levels of personal and professional maturity of future teachers as an integral result of their personal and professional development are revealed. The pedagogical conditions for the development of personal and professional maturity of future teachers associated with the formation of a creatively autonomous educational environment, dialogization of pedagogical relations, activation of reflection and ensuring the subjective position of students in the educational process are determined. The system of development of personal and professional maturity of future teachers is considered as a structural and functional unity of components (target, conceptual-theoretical, content-technological, evaluative-effective), which comprehensively reflect the purpose, objectives, pedagogical conditions, principles, forms and methods of professional training, stages and results of personal and professional formation of students in the educational environment of a pedagogical university