It is not recommended to take the nine-valent vaccine when you are 30 years old, but you can take the quadrivalent vaccine, mainly because there is an age limit for the nine-valent vaccine, and the age limit is between 9-26 years old. For example, if the nine-valent vaccine is given within the specified age, the prevention function is more than 92%, but if the nine-valent vaccine is given after the age of 30, the prevention function can only be about 60% or 70% in clinical practice. The age limit for quadrivalent cervical cancer vaccine is before the age of 46 and after the age of 26. Therefore, quadrivalent vaccine is recommended at this age, and women with a history of sexual intercourse must be screened for cervical cancer before receiving the cervical cancer vaccine.