The timing of cervical cancer vaccination is regular. If the vaccination is not given in time according to the course, it may affect the effect of cervical cancer vaccine. The second injection should not be given more than half a month at the latest, if it exceeds half a month, it will cause the effect of cervical cancer vaccine to decrease, and the effect of preventing cervical cancer will also decrease. The cervical cancer vaccine mainly prevents HPV virus infection, and some studies have shown that HPV virus infection can easily lead to the occurrence of cervical cancer. If you have already been infected, the vaccine is not effective and you need to apply interferon or protein dressing to cure the virus before the vaccine is effective.