In the clinic, we often encounter patients who visit us for breast pain, which itself and the lack of understanding of the disease plague them. Mastoproliferative disorders include simple hyperplasia and cystic hyperplasia of the breast. Simple hyperplasia is a physiological change and is common in women of childbearing age, with a high incidence at 30-40 years old. More than 50% of women have clinical symptoms of breast hyperplasia, such as breast swelling and pain with changes in the menstrual cycle and breast lumps (often bilateral and symmetrical). Cystic hyperplasia of the breast is a pathological hyperplasia with the risk of cancer, and 40-49 years old is the high incidence age. Clinical manifestations are mostly cyclic pain, aggravated before menstruation and relieved after menstruation, and the lumps also shrink after menstruation; occasionally there are also symptoms of nipple discharge, which can be seen unilaterally or bilaterally, mostly plasmacythematous or plasmacythematous (if plasmacythematous or pure blood, be alert to intraductal papilloma). The disease is closely related to the endocrine status. When ovarian endocrine disorders, excessive secretion of estrogen and relative decrease of progesterone occur, the breast parenchyma proliferates, which can cause ductal dilatation and cyst formation.