Introduction Breastfeeding is the process of providing food to babies by using breast milk directly from the mother's breast, breast milk is a food that can protect babies from diarrhea and other infectious diseases. Breast milk has important benefits for the growth of babies and mothers. During the Covid19 pandemic, it caused a crisis in mothers in breastfeeding for fear of transmitting the virus to their children through breast milk. Factors that influence mothers in offering breastmilk are due to the lack of information received by mothers about breastfeeding during the pandemic. This study aims to determine the relationship between knowledge and mothers in offering breast milk during the Covid19 pandemic. Method: This study uses quantitative research, using descriptive analytical methods with a Cross Sectional approach.Using the HRS-A Knowledge Questionnaire and Instruments instrument to calculate. The sampling technique was total sampling, with a sample of 42 breastfeeding mothers. The analysis technique used univariate and bivariate analysis with the Spearman statistical test. Results: The results showed that from 42 respondents there were 14 (33.3%) respondents with less knowledge with moderate estimates. Where to get a P value of 0.027, which means that there is a relationship between knowledge and mothers in offering breast milk to babies during the Covid pandemic, with an OR value of 0.232, where the p value ≤0.05, which means that Ha is accepted and Ho is rejected. Discussion: There is a relationship between knowledge and the conclusions of mothers in offering breast milk during the Covid19 pandemic