he growth and popularity of the social network is undeniable. There is a growing number of studies focused in this field. These studies include the analysis of the impact social networks on children and their environments. All of this because of, nowadays, children are the main users of Web 2.0. The aim of this paper is to show the relationship between childhood and social networks. In conclusion, it's show the necessity to research the beneficts and risks on social networks in the childhood and their environment. Just it makes easier the understanding of the phenomena an effecting vulnerable sector of the population