There are many antiviral drugs for children, and the commonly used ones in clinic are acyclovir preparation, ganciclovir preparation, oseltamivir preparation, etc. They should be chosen according to the condition. 1. Acyclovir preparations: such as acyclovir granules, the main ingredient is acyclovir, which is suitable for acute herpes zoster, genital tract herpes, chickenpox. Adverse reactions include gastrointestinal tract, allergic reactions and so on. Allergic individuals are prohibited. 2. Ganciclovir preparations: such as ganciclovir tablets, the main ingredient of which is ganciclovir, is suitable for cytomegalovirus infections caused by immune injury. Adverse reactions include allergy, arthritis and so on. Allergy is prohibited. 3. Oseltamivir preparation: such as oseltamivir hydrochloride granules, suitable for the treatment of influenza A and B. Its adverse reactions include nausea and vomiting, etc. It is prohibited for allergic patients. Children’s antiviral drugs should be selected by clinicians according to their conditions, and the above drugs should be used under the guidance of physicians.