The present paper approaches the issue of maladaptive cognitive schemes in juvenile delinquency from a psychological and forensic perspective. We south to highlight the differences in terms of maladaptive cognitive schemas depending on the criminal record and gender. A sample of 104 female and male minor participants, aged between 15 and 17 years, was selected, taking into account their criminal history. The data was collected with the Young Cognitive Schema Questionnaire (YSQ-L3a). Significant differences were obtained between the minors with and without criminal records. The work entitled Psychiatric and Psychological Forensic Approach of Maladaptive Cognitive Schemas in Juvenile Delinquency combined the trans theory of cognitive, medico-legal, psychiatric, and psychological schemes in the description and conceptualization of juvenile delinquency. Based on the instrument for the evaluation of cognitive schemes, significant results were obtained that can support the hypothesis of the current research. There were obtained as well significant gender differences in terms of maladaptive cognitive schemas for juvenile delinquents.