A mother's self-confidence in her ability to breastfeed or provide breast milk to her baby is known as Breastfeeding Self Efficacy. This literature review aims to determine the factors that influence self-efficacy in breastfeeding mothers who are also working. The research used is a systematic literature review, the literature review method identifies articles collected through the PubMed and Google Schooler databases with the keywords Breastfeeding Self Efficacy and Working Mothers. The inclusion criteria in the study used were nursing journals and midwifery journals with journal publications starting in 2017-2022. The results of the study: From the eight articles reviewed, it was found that there were four factors that influenced the self-efficacy of working breastfeeding mothers including breastfeeding experience, education/knowledge, type of delivery, and support from family, friends, and workplace. So that it can affect the success of breastfeeding and increase self-efficacy in breastfeeding in working mothers.. Conclusion: The factor that most influences the self-efficacy of breastfeeding mothers is support. Because support from husband, family and workplace can increase mother's self-efficacy in breastfeeding.