This study aims to examine the influence of stressors on initiation and repetition of serious juvenile delinquency, and to provide grounds for intervention.

For these purposes, 8,418 responses from the “A study on supporting mental health promotion for children and adolescents” data of the National Youth Policy Institute (NYPI) were utilized.

The results indicate that (1) 27.5% of adolescents experienced serious juvenile delinquency, (2) family and teacher relationship stress, and appearance stress were associated with the initiation of serious juvenile delinquency, and (3) All relationship stressors; family, teacher, peer, and senior-junior relationship stress had a significant effect on the repetition of serious juvenile delinquency.

Regarding these findings, implications for intervention and further research were provided.