Mothers who have a lot of milk during breastfeeding, once the milk is not fully sucked, it is easy to let the milk accumulate in the breast, resulting in milk accumulation and lumps can appear in the breast, which can be seen in the unilateral or bilateral breast. If you have too much milk after giving birth, the milk secreted will make your breasts look like rocks. At this time, you must use a breast pump or your hands to squeeze out the milk, otherwise the milk accumulation will cause breast swelling and pain. There is also a small hard lump in the breast caused by sleeping in the wrong position and pressing the breast. If the lump is not treated in time, it can cause fever and in serious cases, it can also cause septic mastitis, which can cause pain and must be taken seriously. Therefore, if there is only milk stagnation in the early stage and there is no other physical discomfort, you can discharge the residual milk by hand or with a breast pump, and apply ice packs locally to reduce milk secretion. If the breast swelling and pain are particularly obvious and there is a lump formation, accompanied by a high fever that does not go away, you need to suspend breastfeeding, use a breast pump to discharge the residual milk, keep the nipples clean, wash them frequently with warm soapy water, do not wear too tight underwear, develop good habits of regular breastfeeding, suck up the milk every time, and pay attention to not using too much force or too often when using a breast pump. If a breast abscess is formed, surgical incision and drainage is required.