After weaning, if it is a hard lump caused by milk stagnation, you need to squeeze it out, and if it is caused by other diseases (breast hyperplasia, breast fibroadenoma, breast cancer), you need to target treatment according to the specific circumstances of the disease. 1. Milk accumulation: milk accumulation is likely to lead to inflammation or mammary gland damage if not dealt with in a timely manner, you can use hot compresses and massage to deal with, first take a hot towel on the breast for hot compresses, and then along the nipple around the nipple in the direction of the nipple for massage, the accumulation of milk discharged. 2. Mammary hyperplasia: it is the proliferation and degenerative changes of breast tissue, closely related to endocrine dysfunction, mostly manifested as breast swelling and pain before and after menstruation. For the hard lumps formed by mammary hyperplasia, you don’t need to squeeze the hard lumps, adjust the psychology, buffer the pressure, and the pain can be treated with medication for heavy pain, and regular checkups can be done. 3. Breast fibroadenoma: the most common benign tumor of female breast. It is mostly manifested as isolated lumps in the breast, with clear boundary, smooth surface, tough and elastic texture, and easy to push in the breast. It is related to endocrine hormone imbalance and requires medication and surgical treatment without extrusion. At the same time, breast cancer, breast trauma, chest wall skin disease and other causes of breast hard lumps can not go to squeeze, need to target for treatment. It is recommended that patients who still have lumps one week after weaning should consult a regular hospital to clarify the cause of lump formation and standardize the treatment under the guidance of the doctor.