The purpose of this study is to survey adolescents’ using written language. It is well known that the departure from the language norm is prevalent in adolescents’ language. Therefore, we aimed to exactly diagnose adolescents’ language problem and prepare the ground for establishing educational plan or policy, by surveying adolescents’ language. For this purpose we performed a survey targeting 542 students of elementary, middle, high schools in 6 regions(Gyeongin, Gangwon, Chungcheong, Jeolla, Gyeongsang, Jeju). As a result of this survey, we have shown that there is a widespread verbal abuse and language norm destruction among adolescents. Even curse against elder was appearing. Verbal abuse was being used recklessly even during school class. And it was surveyed that the rough intensity of slang and the language destruction level deepens with age.