The purpose of this study was to investigate the adolescents` Internet using hour according to their parent rearing methods and attitude, amount of conversation hour with their parents and their parent`s demographic variables. The subjects were 4,584 students from middle ＆ high school in Korea. The results were as follows; first, adolescents` Internet using hour was short as their parents used verbal commentation for good behaviors and oral explanation for wrong behaviors. Second, it was short as their parent rearing attitude was lovely and autonomous. Third, it was long as there were no conversation and over 2 hours conversation with their parents. Finally, it was short as their parents were high educational level, upper class job, high socioeconomic status and mothers` no employment.