Journal of International Psychiatry

Objective: To analyze the relationship between Internet use and physical and mental health，and explore the mediation effect of interpersonal relationships. Methods: One survey of 2,360 middle school students from 11 schools in Shenzhen. Used questionnaire to survey students’ daily Internet use duration and interpersonal relationships, and used the WHOQOL-BREF Scale to survey the health of the physical and psychological fields of middle school students in Shenzhen. Results: The results of ANOVA showed that age (β=-0.111, P<0.05), gender (β=-0.129, P<0.05), and academic pressure (β=-0.252, P<0.05) had a strong influence on the physical and mental health of adolescents. In the Multivariate analysis of variance, including general information such as age, gender, whether only child, parental marital status and academic pressure, I/we found that daily Internet usage duration (β=-0.1126, P<0.05); interpersonal relationship (β=-0.552, P<0.05) still had statistically significant influence on the physical and mental health of adolescents. Further mediation analysis found that interpersonal relationships have an intermediary relationship between adolescents using the Internet and physical and mental health, using Bootstrap test results 95%CI [-0.083，-0.141]does not include 0, the mediation effect is established. Conclusions： Internet usage time seriously affects their physical and mental health. Interpersonal relationships mediate the relationship between Internet usage time and adolescents physical and mental health.

Internet; relationships; Physical and mental health; intermediary analysis; adolescents