| The progress of science and technology, the popularity of the Internet, brought convenience to our life. But at the same time, the popularization of the Internet has also brought us negative side. Facing these problems appeared in the network, we all did what kind of research?This paper reviewed about the concept of Internet addiction, and described the classification of Internet addiction and symptoms. According to some important representative literature, summarized the total detection rate of Internet addiction.Internet addiction in1994was first put forward by the American psychologist Gordon’s concept, has been20years up to now. Can be roughly divided into the following four periods.The first stage Initial stage (1997-2000),The characteristics of this period:the domestic literature, more around symptom description. This period belongs to the understanding of the surface of a new phenomenon.The second phase a fermentThis period is divided into two periods:psychological development (2001-2001) and multidisciplinary development period (2004-2007).The psychological development research, how to think Internet addiction is a kind of psychological problems and study. First of all is to use the theory of mind to try to explain the formation mechanism of Internet addiction. Because of China’s Internet addiction is the main crowd of students, which determines the period the main research method is questionnaire. For the intervention of Internet addiction, mainly is the study of the case.Multidisciplinary research development is no longer confined to the category of psychology.2004Liu Shujuan, Zhang Zhijun social psychology-physical model is put forward, make the study of Internet addiction scale to a larger scale, and on the study of Internet addiction, actually involves more than these three disciplines.Diagnostic criteria of the third stage (2008-2011),In2008, Beijing military region general hospital for the clinical diagnostic criteria for Internet addiction. The diagnostic criteria of that caused quite a stir in society, and at that time, about the question of whether Internet addiction as a mental cause extensive discussions. During this period, for the intervention of Internet addiction is mature.The fourth stage. Mobile Internet addiction (2012-present)In recent years, the popularity of smart phones, a growing number of mobile Internet, mobile Internet addiction will become the new trend of study on Internet addiction. |