The delay of cervical cancer vaccine injection generally has no effect, but the delay is too long may reduce the efficacy of cervical cancer vaccine, but the specific effect has yet to be clinically studied. At present, there are bivalent, quadrivalent and nine-valent cervical cancer vaccines, regardless of which vaccine is generally injected three doses, and there is a certain interval requirement. The vaccination time of bivalent cervical cancer vaccine is 0-1-6, i.e., one month between the first and second injection, and five months between the second and third injection; while tetravalent and nineteen-valent have the injection rule of 0-2-6. This injection rule of cervical cancer vaccine is the injection method with the best efficacy and the least side effects, which has been confirmed after certain clinical trials. However, if you fail to get vaccinated in time due to various reasons, i.e., the cervical cancer vaccine injection is delayed for a certain period of time, you can make up the vaccination in time, which generally does not have much effect, but may reduce the efficacy of the HPV vaccine. Cervical cancer vaccination can reduce a part of the incidence of cervical cancer. The vaccination should be given in time to achieve the best preventive effect, and if any discomfort occurs during the vaccination process, you should seek medical advice in time.