The cervical cancer vaccine has no effect on pregnancy. If you become pregnant during the injection, you cannot continue the medication and cannot take the medication regularly according to the course of treatment. The cervical cancer vaccine can prevent HPV virus infection. Some studies have shown that HPV virus infection increases the chance of women getting cervical cancer, so preventing HPV virus infection can reduce the incidence of cervical cancer. If women do not have sex, they can get the cervical cancer vaccine directly. If they have sex, they also need to be tested for HPV and TCT, and if there is no infection, they can get the vaccine directly. If there is an infection, medication is needed, and interferon is used vaginally to cure the virus before cervical cancer vaccine is injected, otherwise it will affect the effectiveness of the vaccine.