Perimenopausal menstrual disorders vary from person to person. Some women experience prolonged menstrual cycles, often not having a period for 2-3 months, or having a heavy menstrual flow with more bleeding on one occasion. Some women may have heavy bleeding for 10 days, half a month, or even a whole month, which is related to the decline or decline of ovarian function, resulting in a decrease in estrogen levels and lack of ovulation. Some women may show symptoms of sudden heavy bleeding at the beginning of the last menstrual period, or even a large number of blood clots and anemia. Therefore, perimenopausal menstrual disorders, individual differences are relatively large, some manifested as abnormal cycle, some manifested as abnormal amount, are a manifestation of dysfunction. Women may be accompanied by organic lesions such as leiomyoma or polyps, which need to be excluded by ultrasound or diagnostic scraping.