Depression and anxiety are major causes of distress amongst parents during the perinatal period. Their pervasive effects on the parents' self-confidence, on the parent-infant relationship and on the child's development have been well documented. The aims of the present study were to describe the psychological characteristics of mothers consulting during the perinatal period and to assess the effect of brief Psychotherapy Centred on Parenthood (PCP) on the mothers' depressive and anxiety symptoms. The evolution of the mother-infant relationship is also documented. PCP is a brief mother-infant psychotherapy which focuses on the mother-infant relationship as well as the mother's mental representations in order to reduce her psychological conflicts.