The nine-valent vaccine is suitable for women aged 16-26 years old and is to prevent HPV infection of types 6, 11, 16, 18, 31, 33, 45, 52 and 58. Types 6 and 11 can prevent acromegaly and the other types can prevent the occurrence of cervical cancer. This vaccine can be given at the right age and can prevent more than 90% of cervical cancer occurrences. After cervical cancer vaccination, routine pre-cancer screening is still needed because there are still some HPV viruses that can cause cervical cancer.