Breast hyperplasia is classified as physiological and pathological and should be recognized correctly and not treated as a disease in all cases. Under normal circumstances, the follicles, ducts and fibrous tissues in the breasts of women entering puberty undergo tissue changes of hyperplasia and recovery during each menstrual cycle. As a result of this change, women in the pre-menstrual period, there may be one or both sides of the breast swelling and pain, after the menstrual period, swelling and pain and natural disappearance, this is a normal physiological phenomenon. When the body under the action of certain factors, such as work is too tense, emotional over-excitement, unmarried at an advanced age, postpartum without breastfeeding, etc., there is a possibility of ovarian secretion imbalance, so that should be restored to the breast hyperplasia tissue can not be restored or restoration is incomplete, and over time, there will be thickened glands and nodular particles, and accompanied by pain, and the pain in the breasts does not follow the menstrual cycle and change, which is the real pathologic This is the real pathology of breast hyperplasia.