Abnormal uterine bleeding with ovulatory dysfunction (AUB-O) during perimenopause is the most common gynecological disease and cause of medical consultation during perimenopause. Essentially, these are symptoms and signs caused by fluctuating sex hormone levels due to decreased ovarian function. Since perimenopause is also a high-risk age for other gynecological diseasesand malignant tumors, standardized diagnosis, treatment and management will help to accurately treat perimenopausal AUB-O and earlydetection and treatment of other diseases. Due to the irreversible nature of ovarian failure during perimenopause, long-term managementcan not only reduce endometrial lesions due to ovulation disorders, but also prevent other health problems caused by low estrogen.