Background: Background: Breastfeeding is important for an infant's development as well as the mother's recovery after birth. Breastfeeding is influenced by a variety of biopsychosocial variables. The purpose of this study was to conduct a comprehensive literature search and explore the relationship between any biopsychological component and breastfeeding duration and intensity. Methods:The databases of PubMed and ScienceDirect were searched. The official website of World Health Organization (WHO) was also explored. Results:The search identified 19 studies, reporting the main biopsychosocial factors affecting breastfeeding intention and duration, including maternal age, occupation, smoking, obesity, the feeding type that the women received, social support, birth complications, cesarean delivery, anxiety and self-efficacy. Conclusion:This systematic review has confirmed that there are specific biopsychosocial factors influencing the breastfeeding process. It is proposed that current care and support should encourage mothers to breastfeed their newborns by providing corrective information and aid.