Interferon suppositories generally refer to recombinant human interferon alpha 2a suppositories, the use of which is usually put into the vagina, and there is no such thing as the most effective method of use. Recombinant human interferon α2a suppository has broad-spectrum antiviral and various immunomodulatory effects, can be used for the treatment of vaginal viral infection caused by chronic cervicitis, cervical erosion, vaginitis, prevention of cervical cancer. The method of use is usually put into the vagina, can be absorbed through the epithelium of the vaginal mucosa, directly in the local antiviral effect, and there is no treatment with the best effect. Patients should follow the doctor’s instructions to use the drug, a very small number of patients after the initial use of the drug appeared slight lumbar and abdominal pain, occasional transient low-grade fever, vulvar, vaginal discomfort, can disappear on their own, does not affect the treatment. It should also be noted that during the period of use of the drug prohibit sitz bath and sexual life, avoid using the drug during menstruation.