The purpose of this work is to study the social-emotional development of children in early childhood. Their emotional development begins from birth. In their first relationships, in contacts with parents or guardians, an important emotional bond of attachment is formed. Temperament, attachment relationships and emotional skills and abilities that will be acquired and developed in the family will shape the development of the child's social relations, both with family members and with everyone else in the child's environment. Social-emotional development is closely related to the development of self-awareness, because when the concept of self is established, the emergence and development of emotional and social skills such as empathy, the development of self-esteem, and play are enabled, which will be closely related to the child's later success in life. In addition to the role of parents, which is the first and most important, the role of the preschool educator is also important; with his/her attitudes, way of thinking and actions he/she guides the child from the first days in an educational institution, inculcates and nurtures certain qualities, contributing to the overall, including social-emotional, development of a child.