This study was to investigate use of functional foods and attitude on related education among adolescents. Subjects of this study were a total of 826 students in middle and high schools of Cheongju and Cheongwon area. Among the subjects, 44.8% had an experience in consuming functional foods. Among the subjects that experienced side effects possibly by the consumption of functional foods, 13.0% ignored the symptom and continued to consume the foods. Approximately one third of the subject(30.7%) obtained information on functional foods from their parents; however, few subjects(2.2%) obtained the information from the nutrition teachers or dietitians of their schools. Only 9.4% of the subjects underwent education related with functional foods, and 35.1% of the subjects demanded education on functional foods. The present study suggests that an effective education is needed for both students and their parents in order to prevent adolescents from the misuse of functional foods.