A bibliography review concerning to mother and child care in "rooming-in" system (RI) was shown in this paper. Propagation of this form of care, main advantages of RI concerning breast-feeding promotion, organization of medical staff work and opinion of women in puerperium about the system were taken into consideration. There was also discussed "Humane Neonatal Care Initiative" which concentrates on dissemination of "rooming-in" in neonatal intensive care units. It issued from this analysis that newborn separation from mother is one of the main reason disordering lactation and rising of emotional link between mother and child.