HPV vaccine can still be cancerous after the booster shot. The HPV vaccine booster shot is the third shot of the HPV vaccine. After the third shot, the number of antibodies in the body will surge again to play the role of long-lasting immunization, so that the antibodies produced will be more potent and the preventive effect will be more lasting. The HPV booster shot can prevent 92% to 93% of cervical cancers, and the prevalence and risk of cervical cancer will be greatly reduced. However, in a very small number of cases, cervical cancer is not associated with HPV infection, so some cases are still not preventable. So there is still a possibility of cancer after the HPV vaccine booster shot. After the HPV vaccine booster shot in the clinic, it is still important to have regular health checkups, and when symptoms appear in the body, it is important to consult a doctor in time and take the appropriate treatment plan under the doctor’s guidance.