This study intended to probe into the difference between juvenile delinquents and non-delinquent adolescents in terms of internal-external control, as well as positive and negative emotions. In order to achieve the objective of the study, 75 juvenile delinquents of the information and communication school (formerly youth detention center) located in D city, and 110 students at D middle school and D high school were examined. Further the theoretical backgrounds and preceding studies were reviewed, and a questionnaire survey was conducted on internal-external control criteria for students and the Korean standard for negative and positive emotions. An independent sample T-test was performed to verify the difference in internal-external control and, positive and negative emotions using SPSS 18.0 statistics program. While a number of preceding studies proved a significant difference between juvenile delinquents and non-delinquent adolescents in terms of internal control and positive and negative emotions, this study holds significance for it manifested that juvenile delinquents have lower internal control and, more intensive negative emotions but similar levels of positive emotion compared with non-delinquent adolescents. In result, we discuss the characteristics of the delinquent adolescents and the difference between the conventional delinquent adolescents and the existing research results. This implies that the study was conducted on delinquent adolescents at the house of correction by actual delinquency and that it was applied at the correction site.