This disease occurs in breastfeeding women, especially in primiparous women, due to: milk stagnation + bacterial invasion, manifested by local redness, swelling and heat in the breast, which can be feverish, with a maximum temperature of up to 40 degrees. Treatment: 1. Before the formation of abscess, conservative methods such as local hot and cold external compresses; draining of milk; infusion of penicillin if necessary. 2, after the formation of abscesses, must be surgically incised and drained How to prevent acute mastitis: 1, early treatment of congenital dysplasia of the breast, such as nipple invagination 2, prevention of milk stagnation, timely dredging of milk (found the problem, timely consultation and treatment to the breast specialist, without delay, so as not to delay the disease) 3, to maintain double breast hygiene, to develop good breastfeeding habits, do not let children sleep with nipples, etc. 4, breastfeeding do breast Massage, gentle techniques, pay attention not to damage the breast