The following foods are contraindicated in patients with polycystic ovary syndrome: First, foods with high glycemic index, such as mashed potatoes, muffins, cakes, sweets, pastries and cookies, which cause a rapid rise in blood glucose levels, aggravate insulin resistance, high calories and lack of nutrients, and may increase body weight. Second, do not eat dairy products, milk intake can lead to an increase in testosterone levels. Milk contains a protein that restricts the normal testosterone pathway in the body, and testosterone cannot be utilized in a timely manner, which can lead to increased levels. If a patient with polycystic ovary syndrome has hyperandrogenemia, dairy products will aggravate acne and hair loss. Third, do not eat soy sauce, which has been clinically observed to have a close association with delayed ovulation. Although there are not many studies that show a significant relationship between soy sauce and polycystic ovary syndrome, it is not recommended for women who are preparing for pregnancy to eat soy sauce products. Fourth, do not eat animal oils such as lard and butter, which remain solid at room temperature and are rich in saturated fatty acids that are harmful to the heart and brain vessels. Fifth, do not eat fatty meat and fried food. Sixth, do not drink sugary drinks, such as cola, chocolate, hot drinks, milk tea and coffee, etc.