Video games (games) are very popular with young people, born with the purpose of bringing entertainment to people after stressful working hours. But for a segment of young people, video games are leaving serious consequences both physically and mentally. First of all, when spending too much time on them, players will lose time to study, participate in social activities as well as easily encounter refractive errors, spine. At the same time, under the impact of violent factors, their personalities - especially underage children - will be more susceptible to change, becoming more grumpy and more aggressive. But that is not the most terrible thing, once you are addicted to video games, players will no longer care about the life around them, neglect all work and find every way to be immersed in the world. of "heroes, warriors, chiefs". Surely, social public opinion still has not forgotten the case of two cousins ​​in Thai Nguyen killing her for money to play games or the fact that a male worker kills his lover to pay the debt due to playing video games. Those are strong bells, alerting everyone to the dangers hidden in today's most popular entertainment mode. In the face of this phenomenon, we all need to be aware of the harmful effects of video games to avoid falling into it, actively participate in physical activities or take time for reading. Build a healthy lifestyle, share a life with those around you, and get rid of dependence on the virtual world. Only then can we limit the harmful effects of video games.