Quadrivalent cervical cancer vaccine is necessary. Cervical cancer is the only tumor with a clear cause among all cancers. The root cause of cervical cancer is the persistent infection of HPV virus, and HPV vaccination can block HPV infection, thus reducing the incidence of cervical cancer. Women of reproductive age have frequent sex life, and the cervical cancer quadrivalent vaccine happens to be suitable for injection at the age of 20-45 years old, so the cervical cancer quadrivalent vaccine can prevent patients from being infected with four types of human papillomaviruses: type 6, 11, 16 and 18, which has a good protective effect on women and can prevent more than 70% of cervical cancers from occurring, and it can prevent more than 95% of infections with human papillomavirus type 16 and 18 HPV types 6 and 11 are low-risk HPVs that can cause vulvar and vaginal warts, while HPV types 16 and 8 are high-risk HPVs that can cause cervical cancer. Therefore, it is necessary to take the quadrivalent vaccine, and after that, you should also do the routine cervical pre-cancer screening, because for a small number of cervical cancer HPV does not play a preventive role.