HPV vaccine generally refers to HPV vaccine i.e. human papillomavirus vaccine. there are different types of HPV vaccine and there is also variability in age suitability. Currently, there are two types of HPV vaccines: bivalent HPV vaccine, quadrivalent HPV vaccine, and nine-valent HPV vaccine. 1. Bivalent HPV vaccine: The bivalent HPV vaccine is suitable for a wide range of ages, from nine to forty-five years old, and its main effect is to prevent cervical cancer infection by targeting human papillomavirus types XVI and XVIII. 2. Quadrivalent HPV vaccine: The age of vaccination for quadrivalent HPV vaccine is from nine to forty-five years old, and it can prevent human papillomavirus types VI, XI, XVI, and XVIII, and its effect is wider than that of bivalent vaccine, preventing a wider range of viruses. 3. Nine-valent HPV vaccine: Nine-valent HPV vaccine is administered at the age of sixteen to twenty-six, which can not only prevent the above mentioned human papillomaviruses, but also the virus infections of type 31, type 33, type 45, type 52, type 58, etc. The HPV vaccine is administered at the age of sixteen to twenty-six. Before patients receive the HPV vaccine, they need to take into account their own situation and ask their doctors for guidance.