Mastitis lumps do not go away for the following reasons: 1, stagnant milk can not be discharged in a timely manner, which is one of the reasons; 2, after treatment, especially the local breast ducts rupture, milk leakage to the surrounding tissue interstices caused by inflammatory lumps, often this part of the lumps by oral or intravenous antibiotic infusion, the effect is also poor. This part of the patient often has local redness, swelling and lumps, but the actual systemic symptoms are very mild, that is, no fever, only local lumps. This is because there is no redness or swelling on the surface of these patients, and there is no increase in body temperature, but the local lumps are only felt after treatment. It is true that thick-walled muscle cysts can be formed after weaning, without any effect on health.