Menorrhagia can be treated in women who develop it at the age of 40. Most women experience amenorrhea between the ages of 45-55, but due to individual differences it is usually not less than 40 years old. If a 40-year-old woman presents with no menstruation for 12 months after her last menstruation and pregnancy has been ruled out, the cause of amenorrhea needs to be investigated. In addition to the medical or neurological disorders that cause amenorrhea, the 6 female hormone tests and gynecologic ultrasound should be performed to eliminate organic lesions of the gynecologic system. As women age, ovarian function decreases, which can lead to the cessation of egg development and ovulation, the estrogen and progesterone produced in the body will gradually decrease, and if ovarian failure occurs, it can lead to the end of menstruation and ovulation and amenorrhea. If the patient is diagnosed with ovarian hypofunction or premature ovarian failure after examination, cyclic female hormone supplementation therapy can be given to allow menstruation to still occur normally. However, patients should be aware that the use of hormone replacement therapy should always be done under the guidance of a doctor.