Cervical cancer quadrivalent vaccine is clinically indicated to prevent infection with HPV type 6, HPV type 11, HPV type 16 and HPV type 18. For quadrivalent vaccination in clinical practice, it is recommended that women who are married or have a history of sexual intercourse should be screened for cervical cancer before vaccination to exclude local lesions and exclude high-risk HPV infection in the epithelium before vaccination is given. The first vaccination can be given at a time of your choice, but not if you have a cold or fever, not when you are menstruating, and not when you are breastfeeding or pregnant. It is recommended that after the first dose, the second dose should be given at an interval of about 3 months, and the third dose should be given within 6 months after the second dose, which means that all vaccinations should be completed within one year.