The media have become an indispensable part of human everyday life, and today's society can hardly be imagined without them. Every new day, more and more media are present, new ones are coming every moment, they enter people's lives and become an integral part of them. Nowadays, children are increasingly exposed to the media and it is impossible to imagine a child growing up without their presence, which greatly affects their growth and development. Preschool children's addiction to new media is the topic of this thesis. The paper will explain new media, as well as their influence on preschool children. The aim of this paper is to point out the excessive dependence of children on the media, as well as to point out the importance of the role of parents and educators in the process of the child growing up and preventing bad influences that the digital world can bring and very easily transfer to the child. In this thesis, research was conducted based on the hypotheses: parents are not sufficiently informed about the possible negative effects of the media on preschool children, the media has more negative than positive influence on children, and parents believe that their children spend too much time on the media. Parents of preschool children from kindergartens in Petrinja were surveyed through an online survey. The results of the research show that parents mostly believe that the media has a negative influence on their children, and from this it can be concluded that the hypotheses set are well established.