Polycystic ovary syndrome often leads to infertility in patients because polycystic ovary syndrome has the following characteristics: 1. It can lead to delayed menstruation in patients. If the menstruation is delayed and prolonged to 30 or 60 days, as well as 90 days, the follicular phase and luteal phase will be prolonged accordingly, leading to irregular ovulation time, and patients lead to find their ovulation period, so it is difficult to get pregnant. These patients often have high androgens, which manifest as hirsutism and acne, as well as a low ratio of estrogen, which is relatively high and is not conducive to egg implantation and sperm-egg union; 2. Patients with polycystic ovary syndrome often have elevated LH, as well as fluctuations in LH, which are not conducive to sperm-egg union, so it can lead to difficulty in pregnancy. In such cases, it is recommended that the patient should go to the hospital for a sex hormone test to understand the specific values of androgens and LH, and do some corresponding treatment to normalize the endocrine secretion, then normal ovulation will gradually resume and the patient will be able to get pregnant normally.