The evolution of the juvenile justice system has shifted from rehabilitation to punishment and back again. This paper explores the crucial role of trauma within the juvenile justice system, recognizing its impact on the biological, psychological, and social effects experienced by children and youth. The paper emphasizes the need for a trauma-informed approach to juvenile justice, drawing from neuroscience research and an understanding of adolescent development. This paper advocates for a shift towards a trauma-informed and biopsychosocial approach to juvenile justice, recognizing the multifaceted nature of trauma and its impact on youth. By integrating these frameworks into policy and practice, the juvenile justice system can better support the rehabilitation and well-being of traumatized youth, ultimately fostering positive outcomes and reducing recidivism rates.