Cefadroxil should be used for at least 3-4 hours before breastfeeding or suspend breastfeeding for 1 day after stopping the drug. Cefadroxil is relatively safe for breastfeeding women to take, but to minimize the risk of the drug being secreted through breast milk and ingested by the fetus, it is best to empty the first milk after using the drug and not let the fetus eat it, and then breastfeed after 3-4 hours. This can minimize the secretion of the drug with breast milk or stop breastfeeding during the whole treatment period, and then breastfeed after 1 day of drug withdrawal when the drug is almost metabolized, which can ensure the safety of the baby. Cephalosporins are relatively safe for breastfeeding women and pregnant women, and rarely affect the growth and development of the fetus and infants.