The causes of female breast pain mainly include the following aspects: 1, the most common breast hyperplasia, the patient manifested in the breast swelling and pain before menstruation. The most common cause of breast pain is breast enlargement, which occurs before the onset of menstruation. After the onset of menstruation, the swelling and pain will be significantly relieved, and the patient should go to the hospital for ultrasound examination in time to make a clear diagnosis.2. Inflammatory diseases of the breasts, including breastfeeding mastitis as well as non-breastfeeding plasma cell mastitis, or lymphocyte mastitis.3. Traumatic reactions to the breast, the breasts are squeezed, especially after incorrect massage, the local oedema will cause pain.4. The breast is a very sensitive endocrine target organ, and after pregnancy, it will be manifested as breast pain. 5, it may occur after a more intense sexual behavior. 6, it may be the local skin inflammation of the breast, such as local sebaceous cysts appeared to be infected.