Breast disease is a common female disease. Under normal circumstances, you can touch your breasts yourself. If you feel a lump, you need to go to the hospital for color Doppler ultrasound examination to determine the size and characteristics of the lump. If necessary, you may need to have a breast puncture for diagnosis. If you feel breast swelling and pain, there is clear fluid overflowing, which may be mastitis or other breast diseases. If it is bloody or purulent secretion, the possibility of empyema and tumor should be considered, and surgery is usually needed. If it is a tumor, biopsy is needed before operation to clarify the classification and surgical method.