Ovarian cancer is a common malignant tumor disease in women. For different types of ovarian cancer patients, the relative age distribution of incidence varies, with the highest incidence in the age group of 50-60 years old. The incidence of ovarian epithelial cancer usually increases rapidly after 40 years of age, with a high incidence around 50 years of age, and then decreases after 70 years of age. Mesenchymal tumors of the sex cords are similar to ovarian epithelial carcinomas, occurring in both young and old patients, and their incidence increases with age. Germ cell tumors are common in young women after the age of 20. There are not many high risk factors for ovarian cancer. Some of the more unusual patients may be associated with genetic mutations, so the age of onset of this type of patient can also be advanced, usually in the 30-40 years of age.