Internet addiction is a symptom, the problems behind Internet addiction are researched and solved by psychologists and medical experts, such as learning difficulties, attention deficit disorder (ADHD), neurosis, personality deviation, emotional (mood) disorders, learning stress, interaction difficulties, loneliness, introversion, childishness, boredom, lack of goals, low self-esteem, paranoia, no sense of responsibility, no sense of value, no sense of belonging, confrontation with parents, no gratitude, zero emotion, distrust of others, teacher-student relationship tension, single value evaluation system (academic achievement as the hero), lack of fatherly love, confused parental roles, strict mother and loving father, Internet addiction accompanied by anxiety, social fear, obsessive-compulsive and other psychiatric symptoms, and so on. If these problems are not solved, it is difficult for children to come out of Internet addiction. It is difficult to solve the above problems completely with a single psychological treatment, and a comprehensive treatment based on psychological treatment and medication (biological treatment) is necessary to solve the problem at root. It must be complemented by education, militarization training, and social experience, “five in one” combination. From our experience and research in treating more than 5,000 cases, we found that the above problems cannot be solved in a short period of time, and that outpatient treatment is basically ineffective, so inpatient treatment, accompanied by parents, and family therapy are necessary. The so-called talking and preaching can solve the child’s Internet addiction problem, that is not a real Internet addiction, just a person who uses the Internet excessively. Using an educational approach can work to some extent, or even better, with early internet over-users. True Internet addiction is pathological, there are alterations in the neurochemical transmitters of the brain and brain imaging findings are altered. In particular, the vast majority of people who are involved in education do not understand the co-morbidities of Internet addiction, and those who think that Internet addiction is an educational problem are one-sided and are unable to look at the whole spectrum of Internet addiction. Because any behavioral problem is a product of brain work, it is impossible to become an Internet addiction without abnormal brain function. We in psychology should look at and solve the problem of Internet addiction from the viewpoint of evidence-based psychology and the viewpoint of unity of mind and body. In addition, the environment in which the child grows up, family and social problems should be addressed together when treating the child’s Internet addiction problem, so that the child’s Internet addiction problem will not easily relapse. Any disease must be analyzed holistically from a social, psychological, and medical point of view.