The problems relating to unaccompanied international minors we receive in the « Maisons des Adolescents » are complex. Studies about mental health of these young people are still few. Most of them must go through their identity construction period alone and have often experienced repeated trauma and multiple bereavements. It seems appropriate to receive these young people in a treatment setting, like the cross-cultural consultations, which enables the emergence of cultural representations and takes into account pre, per and post-migration experiences to restore the construction process of identity.