The pain may be caused by several conditions: 1, local squeezing, impact trauma and other causes of soft tissue injury resulting in pain, before the obvious history of trauma, you can local heat compress, slowly and gradually improve. 2, cystic hyperplasia of the breast. This disease is generally common in middle-aged women, is a benign hyperplasia of the breast parenchyma, due to the body’s hormone metabolism disorders, especially the ratio of estrogen and progesterone imbalance to make the breast parenchyma hyperplasia and incomplete replenishment. The main manifestation is the swelling and pain of the breast with palpable lumps, and the pain will usually gradually increase before menstruation and reduce or disappear after the onset of menstruation, using symptomatic treatment with Chinese herbal medicines or Chinese medicine for the draining of liver and Qi. It is also not possible to exclude the local pain caused by chest wall diseases, it is recommended to try to visit the hospital for examination.