The purpose of the study is to investigate the use of internet of junior high school students in Tainan City. Purposed sampling was used in this study. One hundred and sixty-three junior high school students in Tainan City were participated in this study. Measurements were "The Internet Use Scale(TIUS)" and "Parent-Child Interactive Relationship Scale(PCIRS)". The findings of this research were as follows: (1) The use of internet network is very common among junior high school students, and the main purpose is to play games. (2) Parents of lower graders interacted with adolescents more frequent than parents of higher grader.(3) Parents of high social class interacted with adolescents more frequent than parents of low social class. (4) There is no gender difference in terms of physical and psychological.
