Nine-valent HPV vaccine usually means nine-valent human papillomavirus vaccine, which is suitable for ages 16 to 26. The nine-valent HPV vaccine is mainly used to prevent infection of nine types of human papillomavirus, namely hpv6, hpv11, hpv16, hpv18, hpv31, hpv33, hpv45, hpv52 and hpv58. The nine-valent HPV vaccine is suitable for women aged 16 to 26 years. Symptoms such as localized redness, swelling and pain may occur after vaccination with the HPV-9 vaccine, which are normal and usually do not require special treatment. Women over 26 years of age can consult their doctors at the hospital to choose the appropriate vaccine to prevent cervical cancer. During the period of vaccination with HPV-9 vaccine, avoid overwork, do not be overstressed, and consult the doctor in time when discomfort occurs.