Breast pain is divided into physiological pain and pathological pain, and the reasons for its formation are different. Mainly divided into the following aspects: First, breast pain caused by breast hyperplasia, before menstruation, estrogen rises in the body to stimulate the breast ducts, as well as other mammary tissue expansion and hyperplasia and pain, after menstruation to return to normal for physiological pain, do not need special treatment. If the pain does not return to normal after menstruation or the hyperplasia aggravates the pain, it is pathologic pain, which can be treated with medication through diet and rest. Secondly, benign breast tumors, such as breast nodules or breast cysts, etc., which compress the peripheral nerves and cause pain, can be treated by surgery. Third, milk stagnation during breastfeeding, or even the formation of acute mastitis, resulting in breast pain. Fourth, early pregnancy, due to hormonal stimulation caused by breast pain. Fifth, hormone secretion disorders caused by endocrine diseases, such as estrogen, lactogen elevation caused by breast pain. Sixth, breast malignant tumor, pain caused by advanced tumor. Seventh, the breast tissue has been damaged by external force, such as violent extrusion or collision caused by breast pain.