Lactating women (lactating mothers) need to avoid eating when breastfeeding. The nutritional status of the lactating mother is the basis of lactation. If the nutrition is insufficient during lactation, it will reduce the amount of milk secretion, lower the quality of milk, and affect the health of the mother, so lactating mothers need to abstain from food when breastfeeding. Breastfeeding should avoid tobacco and alcohol, avoid drinking strong tea and coffee. In addition, it should also increase animal food and seafood rich in high-quality protein and vitamin A, and use iodized salt; food variety in puerperium but not excessive, pay attention to the nutrition of the whole breastfeeding period; happy mood, adequate sleep, promote milk secretion; adhere to breastfeeding, moderate exercise, gradually restore the appropriate weight. In addition, if you are sick during the breastfeeding period, some pathogens may be passed on to your baby through breast milk, and if you take medication, many of the drugs will be metabolized to your baby through breast milk, which will affect your baby’s growth and development to a certain extent. Therefore, if you feel sick, we suggest that you consult a doctor and take treatment under the doctor’s guidance, and please follow the doctor’s advice on whether you can breastfeed during the period of medication.