The sudden appearance of reduced menstrual flow at the age of 35 should be considered from several aspects, as follows: 1. Consider whether there is premature ovarian failure: generally for women starting after the age of 35, ovarian function will go downhill. If at this time there is a decrease in menstruation and a prolonged menstrual cycle, it is important to consider whether there is a possibility of premature ovarian failure. At this time, you need to go to the hospital and take blood tests on the 2nd or 3rd day of menstruation to do a sex hormone series to check whether there is ovarian function decline; 2. whether there is a recent history of uterine operation: that is, abortion, uterine removal or diagnostic scraping causing endometrial damage, which can also suddenly appear to reduce menstrual flow; 3. according to the patient’s own changes: for example, whether there is a recent change in the environment, whether there is a change in work pressure, and whether there is a change in dietary habits, such as a change in the workplace. If you are 35 years old and have reduced menstrual flow, you should go to the hospital for an examination to rule out organic lesions and deal with them accordingly. If it is just an endocrine disorder or ovarian function decline, appropriate treatment can also be given to increase the menstrual flow. If it is just a change in lifestyle, patients need to adjust themselves to change the symptoms.