The twenty-first century has entered the era of network information, and the emergence and development of the Internet has brought mankind into the digital age, expanding the second living space of mankind – the network society. In the network world, the emphasis is on “self” as the center, the promotion of individuality, equal communication, avoiding the friction and harm of direct communication, and satisfying people’s enjoyment of convenience and comfort. These qualities are obviously more attractive to teenagers than to other social groups. So there is a shift from discomfort and avoidance of reality to dependence on virtual space and Internet addiction. Internet addiction, also known as Internet addictive disorder (IAD), clinically refers to a group of psychological abnormal symptoms and an accompanying group of physiological discomforts caused by the patient’s excessive dependence on the Internet. What are the manifestations of Internet addiction? Ten criteria are proposed to diagnose Internet addiction for our reference: 1. 8.Paying a large amount of money for Internet access; 9.Hiding their frequent access to the Internet from friends and relatives; 10.Feeling lonely and lost after getting off the Internet. If you or your child has 4 of the above, it may indicate an Internet addiction! If you are already addicted to the Internet, we recommend that you go to a specialized institution such as an Internet addiction prevention and treatment center or a professional counseling agency for formal treatment if you are able to do so. Internet addiction is similar to addictions such as tobacco addiction, alcohol addiction, drug addiction and pathological gambling, and once formed, it is difficult to quit. This requires the joint participation of individuals, parents, schools and government departments. The following points are for reference: 1. Teenagers themselves should develop good Internet habits. Before going online, they should plan, clarify the purpose of the Internet and the time of the Internet, and avoid uncontrolled access to the Internet. If it is not for work or study, but mainly for entertainment, especially as a way to relieve mental stress, it should be restrained and planned, generally not more than 2 hours a day, and a 15-minute break in between. 2, young people should cultivate a wide range of interests and hobbies, rich spare time. Participate in sports, cultural and recreational activities or social activities in their spare time, not only to enrich their lives, feel satisfied and happy, but also to improve their ability to deal with real problems, so as to avoid relying on the virtual world of the Internet. 3, parents, schools and society should participate together. Parents and teachers should raise awareness of the Internet, neither let their children go online to “broaden their horizons” until they become addicted, nor should they worry about the dangers of the Internet and over-control their children’s access to the Internet, which will force them to go to illegal Internet cafes in society and the opposite of what they want. Parents and teachers should not only directly control the time young people spend online at home and at school through proper guidance and reasonable supervision, but also improve their ability to use the Internet reasonably. School education on Internet access for students, improving campus Internet access places and Internet monitoring, and enriching campus life will undoubtedly reduce the occurrence of Internet addiction. In addition, government departments should strengthen the management of commercial Internet cafes, strictly control the dissemination of unhealthy text, pictures, audio and video information such as Internet pornography, and crack down on illegal websites, so as to provide a good social environment for teenagers.