Abstract: Adolescent addiction to Internet is becoming an increasingly serious social prob lem. The article first discusses the harmful effects of Adolescent Internet Addi ction Disorder and then analyses this syndrome in terms of its definition, type, cause and frequency. Based on a study of the underlying cause of adolescent Int ernet addicti on from the aspects of psychology and physiology, family and school education, a nd social influence, the article proposesa blueprint for coping with adolescent addiction to Internet, with professional educators playing a leading role and va rious communities coordinating with each other by adopting, among others, legal, administrative, cultural, medical, moral, educational and even economic means. The measures taken highlight an approach to the solution of adolescent Internet addiction that features the concerted efforts of Internet addicts, educators, fa milies, schools and society, which is both theoretically and practically signi ficant to ideological education of adolescents.