In clinical practice, the success rate of ovulation promotion drugs applied to promote ovulation is about 75%, but the pregnancy rate is only about 30%-40%. Therefore, ovulation promotion treatment does not always result in pregnancy, mainly because when ovulation promotion treatment is given, it can make the secretions in the cervix more viscous, which makes it difficult for sperm to pass through the cervix. Therefore, it is recommended to give estrogen orally along with ovulation-promoting drugs, but it must be in small doses, because if the dose is too high, ovulation may be inhibited. In clinical practice, it is recommended to take 1/4 tablet of Tocopherol once a day for 3-5 days during the ovulation period to improve the pregnancy rate after ovulation promotion.