The World Health Organization (WHO) reports that the coverage of exclusive breastfeeding in the world was only 36% in 2016, while the coverage of exclusive breastfeeding in Indonesia was 37.3%. This achievement still does not meet the target that has been set, which is 80%. This study aims to determine the relationship between nutritional status and the smoothness of breast milk in breastfeeding mothers 0-6 months in the working area of Binangun Community Health Centre, Cilacap Regency. This study used an analytical survey design with a cross sectional approach. The sample in this study was breastfeeding mothers 0-6 months in the working area of Binangun Community Health Centre, Cilacap Regency, as many as 123 breastfeeding mothers 0-6 months taken proportionally randomly. The results showed that most of them were not at risk (87.8%), the last education was SMA/SMK (67.5%), non-employment was (90.2%) and parity multipara (61.0%), nutritional status mostly with Obesity I (43.1%), and smooth breastfeeding (92.7%). There is a relationship between nutritional status and the smoothness of breastfeeding in breastfeeding mothers 0-6 months with the acquisition of a significant value using the chi-square test p = 0.001 (<0.05). The conclusions derived from this study enhance the understanding of nutritional status is related to the smoothness of breast milk in breastfeeding mothers 0-6 months.