Breast swelling and pain after total hysterectomy may be related to breast hyperplasia, breast cysts, breast fibroadenoma, mastitis, breast cancer and other reasons. 1. Breast hyperplasia: After total hysterectomy, there is no period, but the ovaries can still secrete hormones, which will cause endocrine disorders and hyperplasia, resulting in breast swelling and pain, nodules. 2. Breast cysts: cysts of varying sizes are formed around the glandular ducts, containing yellowish or brownish liquid in the capsule. When the ratio of estrogen to progesterone is imbalanced, the breast parenchyma proliferates excessively, resulting in breast swelling and pain after total excision of the uterus with no menstrual period. 3. Mammary fibroadenoma: After the increase in the volume of the mammary fibroadenoma, there is pressure around it, which causes the symptom of breast swelling and pain after total excision of the uterus. 4. Mastitis: It is mainly caused by milk stagnation and bacterial infection, and is mostly seen in lactating women. The cause is unknown in non-lactating period, and it is usually accompanied by breast swelling and pain, sometimes accompanied by breast lumps, fever, and so on. 5. Breast cancer: various carcinogenic factors can lead to proliferation of breast epithelial tissues and formation of malignant tumors, which can be touched by hard lumps with unclear border and irregular shape, accompanied by nipple discharge, breast swelling and pain. If the patient does not have breast swelling and pain after total uterine excision, she should go to the hospital in time to find out the cause of the disease and be treated under the guidance of the doctor.