Background: The kuluna phenomenon is a shape of juvenile delinquency which continues and terrorizes the City of Kinshasa, the main characteristics of which are violence, theft, and sometimes rape in teenagers' band. Objective: this study aims at describing the opinions moved forward by the students of the ISP/Gombe as the causes of the juvenile criminality in Kinshasa. Results: it emerges from our investigations that the questioned students consider several causes of the kuluna, the lack of occupation of which is in pole position (28,81 %), followed by the bad education (24,58 %), the poverty (13,56 %), the not schooling of the children (12,71 %) as well as bad influence (11,86 %); while the absence of the parents (3,39 %), the demonic ownership as well as the bad governance (1,69 %)... close the list. Conclusion: We should attack thus not only the behavior young deviants of kuluna, but olso resolve the problem of the causes and multi-form or multisectorial factors. And Psychologist must be associated on the questions of kuluna behavior's, as researcher, psycho-educational therapist, expert, assessor, trainer or informant.