Breastfeeding is encouraged when there is no pus forming in the inflamed mammary gland, but not if there is pus. New mothers are very susceptible to mastitis, often due to incorrect breastfeeding practices or milk stagnation. In some cases, the milk is stagnant because of a reluctance to breastfeed, and the nutrient-rich milk can cause bacteria to proliferate and exacerbate the inflammation. If the mastitis is due to milk stagnation and there is no pus formation, it is necessary to increase the frequency of breastfeeding to empty the milk. If necessary, a breast pump can be used to drain the breast milk. If pus forms and infection sets in, fluids are needed to fight the infection and breastfeeding is stopped to prevent medication from affecting the baby’s development. Puncture or surgical incision is needed to drain the pus, and high negative pressure drainage. If the nipple bites the nipple because of the incorrect feeding method, resulting in bacterial retrograde infection need to change the feeding method, squeeze out the milk and put in the feeding, and there are wounds in the nipple can be coated with ointment.