Strengthen prenatal and postnatal hygiene propaganda, guide the mother to protect the nipples, help breastfeeding women master the normal method of breastfeeding is an effective measure to prevent external blowing canker sores (acute mastitis during lactation). 1. Breast hygiene during pregnancy: In the last 2 months of pregnancy, frequently scrub the nipples with soapy water or water; or use 70% alcohol (or soju) cotton balls to rub the nipples and areola to strengthen the resistance of the nipples. Because alcohol can remove oil, long-term use can make the areola gland, sebum secretion reduced, causing dry nipples, causing chapped, so can not be used for a long time. 2, correct nipple depression: in the middle of pregnancy to try to correct nipple depression. You can use a small wine cup to cover your nipples and fix them with a cloth belt. Or use a breast suction device to attract, 1 to 2 times / day. It is also possible to massage the breast, or often pull by hand. 3, correct breastfeeding: each breastfeeding should be bilateral breast feeding in turn, and constantly change the position of holding the baby, so that the mammary ducts are fully sucked empty. 4.Keep the milk discharge smooth: The accumulation of milk is an important factor in the development of the disease, so you should breastfeed regularly and drain the remaining milk after breastfeeding. You can use a breast pump or massage the milk out by hand to make it empty. In order to prevent thickening of the milk, the occurrence of curdled milk blocking the milk ducts, to encourage nursing women to drink soup diet several times. 5, timely treatment of cracked nipples: cracked nipples can cause pain, affecting breastfeeding, available Huang Cai, Angelica dahurica half grind, and then sesame oil or honey blended and applied to the affected area. Or coated with bismuth subcarbonate application (alkaline bismuth carbonate 4g powdered, plus vegetable oil 6mg), can also be coated with benzoin tincture, with a breast pump to suck out the breast milk feeding infants. 6, strengthen the infant oral care: pay attention to the cleanliness of the infant’s mouth, can use water to lightly wipe the infant oral mucosa and dental age 1 to 2 times a day; do not let the infant sleep with milk. 7. Indications for weaning: If the patient has high fever or abscess formation, breastfeeding should be stopped and one or both sides should be weaned to prevent the infected milk from affecting the infant. Before weaning, 30g of raw hawthorn, 30g of raw malt and 15g of loquat leaves can be used as tea in decoction until breast milk returns. Use 60g of mangosteen in a gauze bag and apply it to the breast externally, changing it when wet. Place on one breast to wean only one breast. 8, the puerperium should not overemphasize the high-protein, high-fat diet, which will cause excessive milk secretion to milk stagnation, which is also the cause of acute mastitis.