A total of three doses of the nine-valent cervical cancer vaccine are required to prevent cervical cancer. The first dose is given at your own random choice, however, it is important to avoid menstruation and not to receive the vaccine when you have a cold or fever. The second vaccination is given within eight months after the first vaccination. The third vaccination is given within three months after the second vaccination, and the total of three vaccinations should be completed within one year, which can effectively prevent more than 90% of cervical, vaginal and anal cancers. Therefore, it is recommended to receive the nine-valent cervical cancer vaccine if available, which can effectively prevent cervical cancer.