Most of the hard lumps in breasts during breastfeeding are caused by milk stagnation, which can be eliminated by applying hot towels and massaging or emptying the breast milk in time. Breastfeeding breast lumps are a manifestation of breast hardness. Patients in the breastfeeding period the baby did not suck clean breast milk, and did not timely discharge the residual milk, resulting in residual milk stagnation in the breast blockage and thus the formation of hard lumps, the longer the lumps the harder, the more serious will be the phenomenon of breast swelling, tingling and other phenomena. When the breasts accumulate milk hard lumps, you can through the hot towel for hot compress, towel temperature should be appropriate to avoid scalding. Then gently massage, can be very good to dissipate breast hard lumps. When breastfeeding, the mother will let the baby suck on the nipple and most of the areola in the mouth, alternating breastfeeding, and try to breastfeed as much as possible to prevent the accumulation of milk. If necessary, tools such as breast pumps can be used to help mothers empty their breast milk. Breastfeeding breast milk hard lumps should also be considered trauma tumor and so on. When the patient’s breast milk lumps appear to be significantly aggravated, the patient should go to the hospital for timely examination to identify the cause of the disease in order to get more effective treatment.