1.Is there a theory for the prevention of ovarian cancer by removing the fallopian tubes? Yes, the theory of tubal origin of ovarian cancer is a new theory proposed in the last decade. It is now believed that the most common type of plasma cancer in ovarian cancer originates from the fallopian tubes, and therefore ovarian cancer can be prevented by removing the fallopian tubes. Ovarian cancer as an obstetrician and gynecologist probably has a bad impression because it is often detected late, unlike cervical cancer screening, because the ovaries are deep in the pelvic cavity and are not easily detected at an early stage, therefore 70% of ovarian cancer is detected at an advanced stage, and the 5-year survival rate is only 40%. Therefore, if there is no need to have children in the future during second trimester cesarean section or other gynecological pelvic surgery, we can consider adding a bilateral tubal resection to reduce the incidence of ovarian cancer. What is the incidence of ovarian cancer? The cumulative lifetime incidence of ovarian cancer in women is about 1 in 70, which is not too high and not too low. Based on this consideration, it is possible to consider removing both fallopian tubes during the surgery for patients who do not have fertility requirements. 2. Does the removal of the fallopian tubes have any adverse effects on the person? The fallopian tubes mainly play the role of transporting eggs, fertilization and transporting the fertilized eggs to the uterus, and the removal of the fallopian tubes mainly deprives the possibility of natural conception. Removal of the fallopian tubes has no effect on the blood supply to the ovaries, but there is not much data on whether it has an effect in the long term. After removal of both tubes, the ovulation will not be discharged into the uterus, and the ovaries will be absorbed directly into the abdominal cavity. 3.Will the doctor be willing to do it? If there is a request for sterilization during the second cesarean section, in the past doctors mainly did tubal dissection and embedding, but now the new theory has more reasons to support doctors to do bilateral tubal resection, but if doctors, especially those specializing in obstetrics, are not familiar with this theory, it may be difficult to communicate, depending on your luck. 4. Is it necessary to do a separate tubal resection for sterilization? If you are not having a cesarean section, there is no need for a separate surgery to remove both tubes, unless you want to do sterilization, and of course there are other options for men to be sterilized by vasectomy, and other contraceptive measures can be considered. 5. Is it possible to have ectopic pregnancy after removal of fallopian tubes? Theoretically, after the removal of the fallopian tubes, the eggs will not be picked up and fertilized, so the chance of fertilization is almost 0. However, in practice, the number is still not absolutely 0, but basically, there is no need to worry about contraception and ectopic pregnancy. 6. What if I need to have more children in the future? If you change your mind and need to have another child in the future, natural fertilization without fallopian tubes is of course impossible, but you can use artificial ovulation promotion, intravaginal egg retrieval, artificial fertilization and transplantation back to the uterus, which is the hope in case.