Acute mastitis is an acute purulent infection caused by bacteria entering the breast through the nipple on the basis of milk stagnation. It often occurs in lactating women and is more common in primiparous women, but can also occur during pregnancy, non-pregnancy and non-lactation. Clinically characterized by breast lumps, redness, swelling, heat, pain with fever and other systemic symptoms and susceptibility to transmission of the sac. Initial breast massage, indications: external blowing of canker sores, milk inaccessibility, and various causes of milk dyspareunia, technique: apply a little lubricant to the affected breast, massage gently with five fingers from around the breast to the nipple, but should not squeeze or rotate squeeze, but apply positive pressure in the direction of the breast complex, and gradually squeeze out the stagnant milk. While massaging, you can gently pull the nipples several times to expand the nipple milk channels. Topical medication is applied to the lesion directly by using in-hospital preparation of iron hoop san, anti-inflammatory and pain-relieving ointment, stasis-relieving ointment and inflammatory and clearing ointment. At the initial stage, we should take the following points: Tianxi, Yagao, Breast root, Zhongyu, Tianshu, Liver Yu, Qihai, Stomach Yu, etc. Hand techniques: grinding, pressing, kneading, holding. Drainage method at the stage of pus formation: when abscess is formed, it is appropriate to cut and drain, and a radial incision should be made in the direction of the breast complex so as not to damage the breast complex, areola and nipple, and in the case of small and shallow abscess, the pus can be punctured and then applied externally.