The purpose of this study is to compare with life competency between adolescents and adolescents at risk. In order to achieve this goal, the following six subareas of life competency are analyzed: self-control competency, self-fulfilling competency, relationship competency, community competency, creativity competency, and situation handling competency. The subjects of this study are adolescents who are students of middle and high schools, and adolescents at risk who are counseled at Youth Counseling and Support Center in Busan Metropolitan area. Descriptive statistics and t-tests for two groups are performed to analyze life competency and life skills. According to the results, Adolescents\' overall life skills show better performance in harmful substance handling skill, manner skill, listening skill, and internet addiction skill, but performed poorly in time handling skill, expenditure skill, volunteer skill, and leadership skill. Meanwhile adolescents at risk showed better results in harmful substance handling skill, manner skill, listening skill, and cooperation skill, but showed poor performance with regard to time-handling skill, expenditure skill, goal setting skill, and volunteer skill. Based on these results, the following suggestions are made. As adolescents are requested to possess various life competencies necessary to their daily lives, and school-based attention and efforts are needed to improve their life competency. In addition, in order to enhance life competency and life skills, both adolescents and adolescents at risk are needed to participate in the activities to enhance life competency. Teachers and parents are also needed to provoke their attention to develop adolescent\'s life competency.