Currently, along with the rapid development of information technology, many social networks have been launched. Referring to social networks, it is indispensable for Facebook - a website very familiar to the world in general and Vietnam in particular. Can not fail to mention what social networks do for people: exchanges, making friends, entertainment, branding, sales ... But we also do not deny the unpredictable harm from social networks. bring. Social media has been taking away short-lived human funds. Too focused on social networks, we seem to forget that we have to do a lot of work. Too wandering in the virtual world, we forget we need to live for ourselves, for everyone around. The social network itself is gradually abolishing all human communication. Where to sit, everywhere you see you just put your head on the phone and forget having to talk to each other. That is not to mention that the information on social networks is unverified, real fake information. Not only is it harmful to health, this technology product also has a negative impact on the spirit of people, especially young people. Because the online information source has no one to supervise and censor, there are still a lot of false information, depraved cultural products, while young people are not aware enough to screen information and easily lead to receiving it. awakened consciousness, which is followed by the wrong action. Being used by bad guys with names and images of illegal activities affects the reputation and belief of others. Many students are also addicted to social media and their learning goes down. Losing virtual life should forget yourself need to try in real life. So we need to be aware of the true meaning of social media and need to use it wisely and master it as well as master ourselves against temptations