If the mastitis lump is painful, you can use cold towels, antipyretic patches, or even magnesium sulfate or mannitol to apply local cold compresses to reduce pain, but not hot compresses, which can aggravate local pain. You also need to pay attention to more breastfeeding, do not add milk powder to newborns and infants. If you still have hard lumps after breastfeeding, you need to go to the hospital to find a professional lactation therapist to perform breast massage and unclog your breasts, after which the hard lumps will slowly disappear and the pain will naturally reduce or even disappear. If you still feel breast pain, you can also use local cold compresses. After the formation of local abscess, you need to puncture and drain the pus, and give appropriate antibiotic treatment, so that when the local inflammation is controlled and the milk secretion is smooth, the pain will be gradually relieved.