The impact of maternal mental health on parenting and infant development is significant. Infants of mothers who have experienced perinatal mental health problems have genetic risks as well as risks in establishing a stable mother-child relationship, which interferes with the infants’ emotional, cognitive, and social development. Biological, psychological, and inpatient treatments, such as mother-baby unit at the highest risk after childbirth, have been attempted to minimize the negative consequences of perinatal mental disorder. Mother-child psychotherapy is also helpful in improving a mother-child relationship and strengthening the parenting ability.