The key to the prevention and treatment of acute mastitis: 1. Breast hygiene during pregnancy is extremely important. 2, for congenital nipple deformity, after pregnancy (especially the earlier the better) to correct. 3. It is important to keep the milk flowing freely and should never be neglected. The breast milk is emptied as much as possible. 4, for those who have nipple cracking to actively treat, must not be underestimated. 5, the body of other infectious diseases to be properly treated. 6, to pay attention to the oral hygiene of the breast baby. 7, do not develop the habit of breast infants sleep with nipples, pay attention to breastfeeding posture. 8.Once there is an abnormal change in the breast, it should be dealt with in time to avoid the development of the disease. 9.Drink more liquid to thin the milk, reduce stagnation and facilitate milk discharge.