A field of psychological science that studies the origin, dynamics and features of the psychological and mental development of the “mother-child” dyad, the patterns of the earliest stages of human ontogenesis from conception to the first years of life after birth in his interaction with the mother. The main sections of perinatal psychology are: the psychology of conception, the psychology of pregnancy, the psychology of childbirth, the psychology of the early postnatal period. Some authors also divide perinatal psychology into: general, medical (clinical) and special.