Refusal of milk with hard lumps may be caused by milk blockage of mammary ducts, mastitis, breast hyperplasia and mammary fibroma, etc. Treatment includes milk expulsion, medication and surgical treatment. Breast milk blockage: You can use hot towels to apply localized warm compresses, and then massage the breasts while discharging the milk, which will help to relieve the hardness of the breasts after the milk is discharged. Mastitis: In addition to milk extrusion, it should be treated with anti-inflammatory drugs such as oral cefixime and amoxicillin. If the lump has formed an abscess, the stinging sensation is very serious, and there is purulent secretion overflowing from the nipple, then you should consider pus drainage surgery to discharge the pus. 3. Breast enlargement: patients need to adjust their mindset and avoid excessive emotional fluctuations. Triamcinolone acetonide can be used for treatment. 4. Breast fibroid: patients need to be examined every six months. If fibroid tumors are found to be growing rapidly, they need to be dealt with by ablation, minimally invasive rotary excision or traditional surgery, depending on the circumstances. In addition, breast cancer, breast cysts, breast trauma, etc. may also appear similar clinical manifestations, it is recommended that patients consult the doctor in a timely manner, and strictly comply with the doctor’s instructions for treatment, not to treat and use medication on their own.