Ovarian malignant tumor is one of the common malignant tumors in female reproductive organs, but the mortality rate of ovarian epithelial cancer is the first among all kinds of gynecological tumors, which poses a serious threat to women’s lives. So. How to prevent ovarian cancer? The following are the preventive measures of ovarian cancer for you. 1. Screening for high-risk groups: For women who have not given birth, are infertile, have early menarche and late menopause; women with family history of hereditary ovarian cancer and breast cancer, and women with family history of hereditary non-polyposis colon cancer are the vulnerable groups of ovarian cancer and must be especially careful. 2. Pay attention to diet: eat a diet high in protein and rich in vitamin A, and avoid high cholesterol foods. High-risk women can take oral contraceptive pills for prevention. 3.Follow up and review: female patients with breast cancer and gastrointestinal cancer should be closely followed up after treatment and gynecological examination should be done regularly to determine whether there is ovarian metastatic cancer. 4. Pay attention to the diagnosis and management of ovarian cancer: women over 30 years old should undergo gynecological examination every year; high-risk groups should be examined once every six months for early detection or exclusion of ovarian tumors. If necessary, cooperate with B-ultrasound and CA125 tests. For solid ovarian tumors or cysts >5cm in diameter, timely surgery should be performed to remove them. Emphasis should be placed on the clear diagnosis of ovarian enlargement found in women with prepubertal, postmenopausal, or reproductive age taking oral contraceptives. In cases where the diagnosis of pelvic masses is unclear or treatment is ineffective, early laparoscopy or caesarean section should be performed for early diagnosis and treatment.