We live in a world that is unimaginable without media, especially electronic ones. The media is all around us, at work, at school, in kindergarten ... They have emerged in the last century, and the speed at which they spread and strengthen their influence on people is increasing. We are witnesses to this, and children are considered the most vulnerable group. We wonder how the internet, computer games, video games or television affect our children? In recent years, a lot of research has been started on this topic, so it has been established that the media have both positive and negative sides. Children, as the most sensitive group, need help in using them. Parents, caregivers, educators, and others involved in the upbringing should help children choose media content that is appropriate for their age. Adults sometimes find that they are not competent to use the media, so they are afraid and see only the bad side of the media. It is the system that should enable the development of media literacy in society, because in today's world it cannot function without the use of media. This way parents can help their children get the best out of the media without any fear.