Betel nut chewing causes oral cancer, the leading cancer in adult men in Taiwan. From 2015 to 2017, betel nut chewing rate among adolescents aged from 12 to 18, rose consecutively in several counties and cities in Taiwan. This article discusses the current situation surrounding the chewing of betel nuts among adolescents, analyzes the reasons for the use of this substance and reviews the policies regarding its use with the aim, halting the rising trend in its use. Specialists suggest that adolescents may be exposed to betel nuts when participating in Taoism-related events or when working part-time in some workplaces. They may begin to use betel nuts because they are offered the substance from someone they find it difficult to refuse, they are curious, or they unaware of its health hazards. Some smokers feel compelled to go on betel nuts use. However, we also found that there was an increase in knowledge about the substance and its hazards among adolescents and an increase in number of adolescents who want to quit for health reason Therefore, health policy makers may want to focus on limiting the use of betel nut in workplaces and promote the inclusion of information regarding betel nut usage and hazards in health education programs in school. The chewers should receive regular oral cancer screening and be provided with assistance when they want to quit.