The nine-valent vaccine for cervical cancer is a very necessary injection for cervical cancer. The nine-valent vaccine can prevent more than 90% of cervical cancers; 85%-95% of vulvar, vaginal and anal cancers associated with HPV infection; more than 80% of high-grade intraepithelial neoplasia of the cervix, which contains grade II and III intraepithelial neoplasia of the cervix; and more than 90% of genital warts, or STDs. The cervical cancer nine-valent vaccine is very useful, so patients are advised to get it if they can. However, it does have requirements, and the age requirement is that the patient be 16-26 years old. Patients are also required to have good contraception during the injection period, as the nine-valent vaccine requires three injections, and if pregnancy is found to occur, the injection must be stopped immediately.