Interferon is an antiviral drug and the HPV vaccine is a cervical cancer vaccine. Interferon should not be used on the same day as the HPV vaccine, as this may affect the effectiveness of the vaccine. Interferon is a commonly used antiviral drug to treat viral infections. The cervical cancer vaccine prevents HPV infection, which in turn prevents cervical cancer. If interferon is used on the same day after the cervical cancer vaccination, it may cause the vaccine to fail to produce antibodies and affect the effectiveness of the vaccine. Patients with heart disease should be careful about using interferon, and those who are allergic to interferon components are prohibited from using it. The injection of interferon may lead to headache, fatigue, chills and other adverse reactions, and should be careful to use under the guidance of a doctor. If you need HPV vaccination, it is recommended that you go to the vaccination center to consult with your doctor and be vaccinated only after you have given your consent.