The bivalent vaccine usually refers to a cervical cancer vaccine that protects against two HPV virus types. The bivalent cervical cancer vaccine is mainly used for women between the ages of 9 and 45, and mainly targets HPV types 16 and 18, with the higher price indicating that it can prevent more types of HPV. HPV types 16 and 18 are the main types of viruses leading to the occurrence of cervical cancer, with a probability of about 70%, so the bivalent cervical cancer vaccine can effectively prevent the occurrence of cervical cancer. The bivalent cervical cancer vaccine requires three vaccinations. After the first vaccination, it is necessary to have another vaccination every one month, and then another vaccination after an interval of six months. It is recommended that the vaccination be given before the first intercourse, but not after, as long as the age of the person can be vaccinated. If you need the cervical cancer vaccine, it is recommended that women of the right age go to the hospital for counseling and to make an appointment for vaccination.