This study clarified the problems through empirical and comparative data analysis on the discussion of lowering the age of criminal minors, and derived implications for Law-Related Education. To this end, statistical data were used to reveal that the effectiveness of lowering the age of the criminal minor was not significant. In addition, it was considered that 14 years old was not high in terms of comparative law or international human rights law. Furthermore, it was revealed that the validity of lowering the age of the criminal minor was weak in terms of general preemptive effect, special preemptive effect, responsibility material and recursive perspective, public opinion and juvenile protection ideology. Based on this, the restorative justice model should be directed. In addition, this article suggested that Law-Related Education should be implemented to strengthen parental responsibility, Law-Related Education and Human Rights Education through school teachers, and strengthening educational functions in ｢the Juvenile Act｣.