Hard lumps in the breasts may be caused by hard lumps from breastfeeding, inflammatory hard lumps in the breasts, tumors in the breasts, and so on. It can be relieved by emptying the accumulated milk, medication and surgery. 1. Breastfeeding hard lumps: If it is a breastfeeding hard lump, it is recommended to find a professional breastfeeding practitioner to empty the accumulated milk. 2. Inflammatory hard lumps in the breast: If it is manifested by localized redness, swelling, pain and hard lumps in the breast with obvious pressure, it may be caused by inflammation in the breast. Antibacterial treatment such as levofloxacin and erythromycin can be given under the guidance of the doctor. 3. Breast tumors: such as benign breast tumors, breast fibroma, breast lipoma and breast cancer, which may need to be removed by surgical methods, such as local mastectomy. In addition, breast hyperplasia, breast trauma and other diseases may also appear breast hard lumps, patients with hard lumps in the breast, should go to the regular hospital in a timely manner, to clarify the cause of the disease, under the guidance of professional doctors to take targeted treatment.