Ovulation promotion continuous medication for three menstrual cycles or half a year before ovulation promotion may be successful. Corresponding tests, such as thyroid function tests, sex hormone six, ultrasound, liver and kidney function tests, etc., should be done before ovulation promotion treatment. Only when the ovarian function is normal and the level of estradiol reaches a certain level can ovulation promotion treatment be given clinically to increase the chance of successful ovulation promotion.1. During ovulation promotion, ovulation should be monitored by ultrasound to understand the follicular growth.2. It is necessary to observe whether there is abnormal enlargement of the bilateral ovaries or ascites, so as to avoid overstimulation of the ovaries.3. It is necessary to observe whether it leads to premature failure of the ovarian function.