Nine-valent vaccine is the nine-valent HPV vaccine, which can prevent cervical cancer and vulvar cancer caused by high-risk human papillomavirus infection, as well as genital warts caused by low-risk infections, the whole process requires three injections, the first and the second injection interval of six months is available. The nine-valent HPV vaccine is a class of biological agents that can prevent HPV infection, and can prevent more than 90% of cervical cancer and more than 90% of genital warts. The full course of the nine-valent HPV vaccine requires three shots, with the first and second shots spaced at least one month apart, the second and third shots at least three months apart, and the third shot should be completed within a year. Even if for some reason you don’t get vaccinated on time, you can continue with the remaining doses regardless of the interval, as long as you are not over 26 years of age. Thus the first and second shots can be administered six months apart. It is recommended that women receive the nine-valent HPV vaccine in a timely manner to maintain their personal health if they meet the indications for the vaccine.