If a woman of childbearing age has good ovarian function, her menstruation is normal or abnormal. If she has irregular menstruation, reduced menstrual flow, amenorrhea, or even infertility, it is possible that her ovaries are not functioning well. How can we determine this? The first thing to do is to check the sex hormones at different times of the menstrual cycle, and then look at the development of the uterus, the thickness of the endometrium, etc. Only after the examination can we know what kind of poor ovarian function, and then we can decide how to make adjustments.