Extracorporeal spermatozoa are not 100% safe and should be used correctly as a method of contraception such as condoms or suppositories to be on the safe side. Extracorporeal ejaculation is often used as a contraceptive during male sexual intercourse, but it is not 100% safe. If you are not having sex during a woman’s ovulation period, it is safer to use extracorporeal ejaculation, as the sperm-egg combination will not occur and you will not get pregnant. If the sex life in the female ovulation, the use of extracorporeal ejaculation semen in the vaginal opening and the surrounding area, not timely treatment may be part of the sperm with the vaginal secretion into the vagina; or in the ejaculation of a small amount of sperm has already entered the vagina, may occur sperm and egg combination and pregnancy. Therefore, taking extracorporeal ejaculation is not completely safe. If you want to prevent pregnancy, you can consult your doctor and adopt the correct scientific methods such as using condoms and placing a birth control ring on the woman. If a woman has an unwanted pregnancy and wants to terminate it, she is advised to go to a regular hospital and under the guidance of a doctor to avoid affecting her health.