Women can get the cervical cancer vaccine after having sex, but the following two aspects need to be noted when getting the cervical cancer vaccine: First, patients must make sure they are not pregnant when getting the cervical cancer vaccine after having sex. Therefore, before a patient is given the cervical vaccine without contraception, a pregnancy-related screening must be performed. After the screening, pregnancy can be ruled out for injection. The cervical cancer vaccine needs to be given 3 times and contraception should be used during the injection period. In case of unplanned pregnancy, the injection should be stopped immediately and the rest of the cervical cancer vaccine should be given after delivery. Patients who are pregnant can continue their pregnancy after stopping the cervical cancer vaccine and do not need to have an abortion for this reason. Second, after having sex, patients need to undergo HPV screening of the cervix before cervical cancer vaccination. It is necessary to observe whether the patient has HPV infection, and regular cervical HPV screening is needed after cervical cancer vaccination.