Currently, the world has hundreds of different social networking networks with MySpace and Facebook being the most famous in the North American and Western European markets. In Vietnam, there are many social networks such as: Zing Me, Zalo,... Today, we can easily grasp information from many different sources on the internet and especially through social network with rapid spread. Social networks have become popular and close to everyone, especially young people. The purpose of a social network is to create an Internet-based system that allows users to communicate and share information effectively, beyond geographical and time limitations. The benefits of the network Society gives us a lot and positive impacts if we know how to use them properly. But it also has many potential negative impacts on health, intellectual development, privacy issues, political security, social order and safety.