An obvious lump on the upper side of the breast with pain on pressure is more likely to be benign, most commonly an inflammatory lump. The patient has a history of acute mastitis, especially after breastfeeding is more common, in severe cases, it will be accompanied by fever and pus, ultrasound examination can also find lesion irregularity, should be systematically anti-inflammatory treatment, the cause of the occurrence of lactation is related to the drainage of milk is not fluent, stagnation. If an obvious pus cavity is formed, surgical incision and drainage is required. For mild inflammatory lumps, physical therapy can be used, and local hot compresses can also make the lumps gradually subside. If the limited lumps cannot subside, surgical excision can also be chosen, in which the breast tissue is partially excised under epidural anesthesia, and anti-inflammatory treatment is also needed after the operation.