Children are addicted to social network, so they use tablets too much. A report by Gentile (2002), “A researching study conducted by the National Institute on Media and Family, children spend more time sitting in front of electronic screens (four hours) than doing any other activity besides sleeping”. Currently, there are social network services to choose a lot, for example Facebook Twitter makes people can contact each other all the time, but for children it can cause bad outcomes follows. They are not interested in talking with friends around as a result, children adapt someone else is difficult, and the loss is another they follow news updated in social network all the time, but talking with friends in social network.