Hard lumps protruding from the breasts of breastfeeding women may be due to secretion of milk from the paratesticular breasts, mastitis, paratesticular breast tumors, which can be treated by general treatment, medication, and surgery. 1. Breast milk secretion: During the breastfeeding period, breast milk will be secreted from the paratesticular breasts, which cannot be discharged in time, resulting in lumps protruding from the paratesticular breasts. Patients can use hot compresses to promote blood circulation in the paratesticular breasts to improve the accumulation of breast milk. At the same time, you can also massage the breast milk as soon as possible to discharge the accumulation of milk. 2. Mastitis: this symptom may also be due to the long-term accumulation of the paramedical breasts caused by paramedical mastitis, the patient in the hot compresses and massage and other ways of treatment is invalid, you can follow the doctor’s instructions to use amoxicillin, erythromycin and other drugs for treatment, mastitis is serious need to be surgically removed from the diseased area. 3. malignant tumors of the paratesticular breast: malignant tumors of the paratesticular breast can also cause the symptom of breastfeeding protruding hard lumps, this disease should be completely removed by way of surgery, with paclitaxel, cisplatin and other drugs for chemotherapy. At the same time, breastfeeding women with breast lumps may also be caused by trauma, trauma can be used in the early stage of cold compresses to reduce tissue swelling, and in the later stage of hot compresses to promote blood circulation, to promote the lumps to subside. Breastfeeding women with lumps in their breasts should consult a doctor in a regular hospital and receive standardized treatment under the doctor’s guidance.