Music is an omnipresent part of our lives, which we meet in an early childhood. It presents one of the richest sources of teaching children as well as their emotional growth, so it is important to use its full potential. Child starts its emotional development while in stage of infancy and accordingly with its development and growth, his emotional perception develops as well – expressed through a variety of music types. It is because of these facts that this paper firstly wants to answer the question of what kind of an influence and how much of an influence music has on an emotional development of a child in its preschool years. It should be emphasized that more research of this topic must be done in the future, in this field. Methods used during writing this paper include analysis of already conducted researches as well as interpretation of professional literature. Results showed the influence of rhythm, pitch height, tone of music and lyrics all influence child's understanding of emotions in music. Music is very scarcely present in educational institutions and preschool teachers are not competent enough for musical teaching in preschool institutions. Influence of music on an emotional development of preschool children is a field which has not been researched enough and because of that, the quantity of scientific as well as academic papers and researches is very small. Considering the great importance of emotions in later life of an individual as well as big presence of music in everyday life, it is of great importance to do more research on how to apply music more while working with preschool children in order to further better their emotional growth. That way, there could be discovered some new methods of teaching children through music which could then improve, long-term, the quality of not only the class itself but the quality of children's lives.