The aim of this final paper was to present and describe the importance of the influence of family relationships on the development of emotions in preschool children. Early childhood is a key period for the development of emotions in children, and it is precisely the relationships with parents that plays a leading role in this process. The quality of the relationship with the parents during this early period can have long-lasting consequences on the child's emotional development. The first part of the paper discusses the emotions and emotional development of preschool children, while the second part of the paper discusses the family and family relationships, as well as the parental approach, which can favorably and unfavorably affect the development of the child's emotions. Considering the importance of the topic itself, the function of family therapy is highlighted in the final part of the paper, as well as the importance of games and reading picture books for the purpose of quality emotional development, where examples of stimulating games and quality picture books that can be used in working with children are also given.