At present, breast enlargement has become the most common breast problem in women, not only the incidence is increasing year by year, but also the incidence of the population is getting younger and younger, mostly seen in women aged 20 to 45. According to the survey, about 70% to 85% of women have varying degrees of breast enlargement. Pathogenic factors: The more recognized cause of mastocytosis is endocrine disorders. The decrease in luteinizing hormone secretion and the relative increase in estrogen are important reasons for the development of mastocytosis. Normally, in each menstrual cycle, the breast follicles, ducts and fibrous tissues of women entering puberty go through a process of tissue changes of hyperplasia and recovery. As a result of this change, before menstruation, one or both breasts may have light or heavy swelling and pain, and after menstruation the swelling and pain disappear naturally, which does not hinder life, study and work at all and is a normal physiological phenomenon. The causes of mastocytosis also include mental factors, unreasonable dietary structure, abortion, not having children or having children over 30 years old, not breastfeeding, marital discord, hormone-containing health products, wearing too tight bras, etc.