Interferon is one of the drugs used to treat cervical HPV infection and usually requires a continuous cycle of 3 months of medication followed by 3 months of discontinuation for review, i.e. 6 months from the start of medication to review. Interferon is an immunomodulator and does not directly kill the virus. Its main function is to strengthen the body’s immunity, and once the body’s immunity is strengthened, the virus will be automatically cleared by the immune system. Therefore, most HPV viruses will be eliminated by the body within 6 months-2 years after the patient uses interferon. Patients should have a TCT test before medication to understand the extent of cervical lesions and colposcopy if necessary to clarify the specific treatment plan. If the TCT is normal and the patient uses interferon, the HPV should be rechecked after 3-6 months, and if the result is still positive then it can be rechecked at an interval of 6 months, and the cervical TCT should be rechecked at the same time. In addition, the patient should pay attention to a light and nutritious diet, regular work and rest, and proper exercise during the treatment period to improve their immunity and facilitate the virus to turn negative.