Ovarian cancer, a collective term for ovarian malignancies, is one of the three major gynecologic malignancies along with cervical cancer and endometrial cancer. The most common one is ovarian epithelial cancer, which accounts for 85-90%. The exact cause of ovarian cancer is still unknown, but there are some related high-risk factors, and women with the following conditions will have an increased risk of getting ovarian cancer 1. women who suffer from infertility and have never given birth; 2. middle-aged and elderly women, such as those over 50 years old, especially those who menopause later than 55 years old; 3. the use of ovulation-promoting drugs, such as hormonal ovulation treatment required during assisted reproduction IVF-ET, followed by multiple manual egg retrieval operations, which cause certain damage to the ovaries and ovarian hyperstimulation syndrome in severe cases. This is in line with the hypothesis of continuous ovulation proposed by current scholars: continuous ovulation causes continuous damage and repair of the ovarian surface epithelium, and during the repair process, genetic mutations may occur on the ovarian surface and the epithelial cells of the inclusions cysts, thus inducing ovarian cancer. It is currently the most cutting-edge medical term for the cause of ovarian cancer. 4.5-10% of ovarian epithelial cancers have family history or genetic history: family history of cancer, such as ovarian cancer, breast cancer, endometrial cancer; own history of cancer, such as breast cancer, endometrial cancer. Most hereditary ovarian cancers are related to BRCA1 and BRCA2 gene mutations: for example, family members with hereditary ovarian cancer syndrome (HOCS), for such high-risk groups, it is recommended to perform preventive oophorectomy to reduce the occurrence of ovarian cancer. 6.Ovarian cancer is related to hereditary non-polyposis colorectal cancer syndrome: those who have a family history of bowel cancer or have suffered from bowel cancer themselves. 7. Those who have a history of primary fallopian tube cancer and a long-term history of pelvic inflammatory disease. Clinically, laparoscopic bilateral tubal resection is feasible for young patients who have completed childbirth or those who are old without childbirth requirements to reduce the chance of ovarian cancer in the future.