The nine-valent vaccine referred to in the clinic mainly refers to the cervical cancer vaccine. There are 3 types of cervical cancer vaccines, bivalent, quadrivalent and nine-valent. The nine-valent vaccine mainly includes prevention of 6, 11, 16, 18, 31, 33, 45, 52 and 58, the nine viruses. Because the occurrence of cervical cancer is very much related to the high-risk human papillomavirus, 16 and 18 infections, this vaccination can prevent the occurrence of cervical cancer very well. The nine-valent vaccine can also prevent genital warts to a large extent. The nine-valent vaccine is suitable for people between 16 and 26 years old and can be given to both men and women to prevent cervical cancer in women and penile cancer in men. The best results are achieved by injecting women who have not had sex, and women who have had sex can be injected and must be screened for HPV before the injection.