The work of a preschool educator is determined by legal documents, namely the Law on preschool education (2022), State pedagogical standard of preschool education (2008) and National curriculum for early and preschool education (2015). All these documents determine what a preschool educator should do. However, in addition to the basic task of caring for children of early and preschool age, in modern times the role of preschool educator in educational institutions has changed from a traditional knowledge provider to an active partner in child's learning today. The preschool educator has an important role in supporting the development, learning and well being of children. Preschool educator's role includes a proactive approach, inclusiveness, collaboration, promoting children's development and monitoring their progress. Preschool educators should be aware of differences among children, create an inclusive environment and collaborate with parents and other professionals to ensure the best experience for children. Also, educators should monitor the children's progress and support them in their overall development. Apart from caring for the well-being of children, preschool educators should take an interest in their professional development. Competent approach to professional development is a measure of the quality of development and the educator as a reflective practitioner is the preferred paradigm of his professional growth. The aim of this paper is to give a theoretical account of a complex role of preschool educator in an educational institution and to point out the factors of preschool educator's actions in all areas of the educational process.