Quadrivalent HPV i.e. quadrivalent HPV vaccine, bivalent vaccine i.e. bivalent HPV vaccine, it is better to have either quadrivalent HPV vaccine or bivalent HPV vaccine at the age of 30 years old, and there is no such thing as which vaccine is better. In the clinical opinion, both quadrivalent and bivalent HPV vaccine at the age of 30 are available. The bivalent HPV vaccine can prevent HPV type 16 and HPV type 18 viral infections. Quadrivalent HPV vaccine can prevent HPV type 6, HPV type 11, HPV type 16, HPV type 18 viral infections. Therefore, the quadrivalent HPV vaccine prevents more types of HPV viruses than the bivalent HPV vaccine, so try to get the quadrivalent hpv vaccine when conditions allow. According to the HPV vaccination requirements, 30 years old can take both quadrivalent and bivalent vaccines, and if the appointment for quadrivalent vaccine is not available, bivalent vaccine can also be taken.