Introduction: Breastfeeding is the most natural and ideal way of feeding an infant, at the same time provides optimal protection from different diseases and infections. Breastfeeding is important way of establishing and nursing the relationship, between mother and her child. Purpose: To present credentials of exclusively breastfeeding of HIV positive mothers and to present a descriptive possibility of transfering HIV virus from mother to the child. Methods: The descriptive method of work has been used with examination literature in slovenian and english language. The period of researching was from December 2017 untill May 2018. Literature was researched with the help of bibliographic database CINAHL, Cochraine Library, Web of Science and SAGE Journals in COBIB.si. Results: For HIV treated positive mothers in the underdeveloped world, WHO advises exclusively breastfeeding for the first 6 months of life. Mothers who exclusively breastfeed for the first 6 months after childbirth are expected to reduce the likelihood of transmission of the infection to the baby by non-breastfeeding mothers by 3-4 x. Exclusive breastfeeding is safer than mixed feeding, even when HIV positive mothers are not being treated. Nurse is one of the first persons, who after the labour is in touch with a breasfeeding mother and her infant and is important at establishing breasfeeding. Discusion and conclusion: Women, who are decided that will not exclusively breasfed, are often criticised from the society and consequently eliminated, They are also labeled with a stigma of infected mothers. Most HIV positive mother decides for an option of breastfeeding her infants for six and more months in favour of their infants, which is good for decreasing the chance of intestines infection and with that connected diareas. In principle, nurses advice breastfeeding regardles of the HIV status, even though some of them are not approving that because of ethical and other reasons. Nurses and midwifes have vital part in informing pregnant women about breastfeeding and are first, who can help mothers and offer support.