Interferon is a glycoprotein is a synthetic drug. The main role is antiviral can inhibit the growth and reproduction of viruses without affecting the function of normal cells, but also has a regulatory immunity, anti-tumor effect. Interferon, often used in gynecology, usually refers to recombinant human interferon alpha 2b gel. It is mainly used for the treatment of severe cervical erosion, condyloma acuminata, herpes zoster and genital herpes. During the course of use, individual patients may experience mild itching, lower abdominal cramping, and increased discharge, which will resolve on its own after discontinuation of the drug. When treating warts and genital herpes, there may be local burning pain and mild itching. Interferon is not indicated for everyone The following people are contraindicated: pregnant and lactating women, patients with a history of psychiatric disorders, patients with central nervous system disorders such as epilepsy, symptomatic heart disease, and people with hematopoietic disorders.