There are many reasons for breast pain, mainly divided into the following cases: first, the development of youth in men and women due to hormone secretion, breast development will be a certain degree of breast pain, is a normal physiological phenomenon, does not require special treatment; second, breast hyperplasia, women before and after the onset of menstruation in the body estrogen levels rise, stimulating breast tissue caused by physiological breast hyperplasia, hyperplasia will appear breast pain, in the When the hormone level returns to normal after menstruation, it can recover on its own and does not need special treatment. Third, pain caused by benign breast tumors, such as breast fibroids, lipomas, etc., with the increase of tumors compressing the small nerves in the surrounding tissues, resulting in breast pain; fourth, mastitis, which is generally caused by the accumulation of milk in breast ducts of lactating women, resulting in local inflammation. Fifth, malignant tumors of the breast, malignant tumor infiltration and compression will also cause local pain in the breast; sixth, trauma to the breast, due to external forces such as extrusion, resulting in soft tissue damage to the breast pain.