Introduction: The mental health problems of women during pregnancy and after the birth of a child represent an increasing global problem. Postnatal mental disorders often go undiscovered or are detected late, and as such they are more difficult to cure. In such cases, the woman's family and her good relationship with her partner are of great help. Stigmatization and self-stigmatization have a very negative impact on the recognition and treatment of prenatal and postnatal mental disorders. Purpose: To explore the importance of health education in the field of postnatal mental disorders, the impact of the stigmatization of postnatal mental disorders on their timely identification and beginning of treatment, and to define the most appropriate forms of a nurse's health education work in the case of postnatal mental disorders. Methods: The thesis was written using a descriptive method. References were searched in databases the MEDLINE, CINAHL, Cochrane, SAGE Journal and with browsers Google Scholar and COBISS.SI. Results: Health education has a key role in the prevention and early recognition of postnatal disorders. Self-stigmatization and stigmatization are often the main reasons for the late detection of postnatal disorders. A nurse can carry out health education work at several levels of nursing care; in conjunction with midwifery care, results can be achieved faster and more successfully. Discussion and conclusion: By providing years of professional care and health education using their knowledge, dedication and persistence, nurses can save the lives of women who are afraid to talk about their emotions or who do not recognize and understand the signs of postnatal mental disorders.