Dysfunctional uterine bleeding is a common female reproductive endocrine disorder. Dysfunctional uterine bleeding, referred to as homeostasis, is abnormal uterine bleeding caused by dysfunction of the reproductive endocrine axis. Normal menstruation is regulated by the hypothalamic-pituitary-ovarian axis, i.e., the reproductive endocrine axis. Normal menstrual cycle lasts 21-35 days, menstrual period lasts 2-7 days, and the average blood loss is 20-60 ml. Anything that does not meet the above criteria is considered abnormal uterine bleeding. Abnormal uterine bleeding due to the dysfunction of reproductive endocrine axis caused by various reasons is called dysmenorrhea, which is divided into two categories: anovulatory and ovulatory. The cycle, duration and bleeding volume of normal menstruation show obvious regularity and self-limitation. When the female organism is affected by various internal and external factors, such as mental stress, malnutrition, metabolic disorders, chronic diseases, sudden changes in the environment and climate, dietary disorders, excessive exercise, alcoholism, etc., it can cause dysfunction of the reproductive endocrine axis and lead to menstrual disorders, i.e. dysmenorrhea. Anovulatory dysmenorrhea is the most common type of dysmenorrhea, accounting for about 80%-90% of dysmenorrhea, which occurs during puberty and menopausal transition, and manifests itself as disorders of menstrual cycle, varying length of menstruation, variable or increased menstrual flow, or even heavy bleeding, during which there is usually no abdominal pain or other discomforts. Ovulatory dysmenorrhea, also known as ovulatory menstrual disorders, is less common than anovulatory dysmenorrhea, and occurs more often in women of childbearing age. The patient has cyclic ovulation, so the menstrual cycle can be roughly identified. Ovulatory menstrual disorders can be divided into excessive menstrual periods and bleeding between menstrual cycles. The former has normal menstrual cycles and periods, and usually only shows increased menstrual flow; the latter shows shortened menstrual periods or bleeding in the middle of two menstrual periods. In summary, dysfunctional uterine bleeding is a kind of abnormal uterine bleeding, and the treatment mostly requires oral medication to adjust the menstrual cycle.