During the epidemic, if there are special circumstances, the second dose of the nine-valent cervical cancer vaccine can be postponed, but try to avoid postponing it for too long. In general, the injection program of the vaccine is at least one month between the first and second injection, but it is not strictly limited to one month. The injection time for the second dose of the nine-valent cervical cancer vaccine can be extended to three months or even half a year from the completion of the first dose, so if the second dose cannot be administered on time due to the epidemic or other special circumstances, it can be appropriately postponed. However, in order to improve the effect of vaccination, the second injection of the nine-valent cervical cancer vaccine should not be postponed for too long, and try to make all three injections within one year, and try to complete the injection before the beginning of sexual life, so that the cervical cancer vaccine can maximize the efficacy of the vaccine.