Oseltamivir is required for children with viral infections caused by influenza viruses (influenza A or influenza B). However, if the infection is caused by other viruses, oseltamivir is not necessary and other antiviral drugs should be used under the supervision of a physician. 1. Need to take oseltamivir: oseltamivir is only effective against influenza virus infection, for example, when patients are infected by influenza A virus or influenza B virus, oseltamivir can be applied promptly in the early stage of the disease to carry out antiviral drug treatment. 2. do not need to take oseltamivir: children due to rhinovirus, adenovirus and other infections caused by the application of ribavirin particles and other drugs under the guidance of a physician to treat; if due to herpes virus infections caused by herpes zoster, varicella herpes virus, etc., you need to apply under the guidance of the physician, antiviral drugs, such as acyclovir treatment. There are many kinds of viral infections, and it is necessary to clearly diagnose the cause of the disease in order to carry out targeted treatment and medication.