The nine-valent HPV vaccine is suitable for women aged 16-26. Nine-valent HPV vaccine can effectively prevent infection of HPV types 6, 11, 16, 18, 31, 33, 45, 52 and 58 after vaccination, which is the cervical cancer vaccine that covers the most HPV virus types at present. Because the older a woman is, the more likely she is to be infected with the HPV virus, the nine-valent HPV vaccine is generally not given after the age of 26. For women aged 16-26, it is best if they have not had sex before receiving the HPV vaccine. If they have already had sexual intercourse, they can be vaccinated with the nine-valent HPV vaccine after ruling out cervical lesions. However, the vaccine only has a preventive effect, and it cannot treat HPV that has already been infected, and regular checkups should be conducted after the vaccination. If you are already over 26 years old, you can get the 4-valent or 2-valent HPV vaccine.