Ribavirin is an antiviral drug, belonging to the synthetic nucleoside antiviral drugs, can inhibit the synthesis of viral DNA and RNA, thus inhibiting viral replication, and has the efficacy of killing viruses. It can inhibit viral DNA and RNA synthesis, thus inhibiting viral replication and killing viruses. Clinically, ribavirin can be used to treat influenza, parainfluenza disease, hepatitis A and B, measles, viral mumps, herpes simplex, herpes zoster, viral keratitis, viral stomatitis, viral pneumonia, bronchitis and other diseases. Ribavirin also has certain adverse reactions that can occur in the red blood cells, leading to hemolytic anemia, so people with anemia should not take the drug. People with heart disease and cerebrovascular disease should also use it with caution. And ribavirin has a certain teratogenic effect on the fetus, pregnant and lactating women should be strictly prohibited from using.