Parenting can possibly prevent addictive Internet use among schoolchildren. To explore such a possibility, this study surveyed 1,771 secondary school students (Grades 10 and 11) in Guangzhou and Hong Kong about their addictive Internet use and the parenting style they experienced. Five distinguishable patterns emerged from the cluster analysis of three parenting styles, permissive, authoritarian, and flexible parenting. The “high or inconsistent” parenting pattern, which attained high scores in all three parenting styles, exhibited the least degree of addictive Internet use among the students. By contrast, authoritarian parenting pattern resulted in the highest level of addictive Internet use. The variation caused by the parenting patterns far exceeded that caused by parenting styles. The results indicate that balanced parenting will most likely prevent students’ addictive Internet use.