Once the diagnosis of influenza A is confirmed, anti-influenza virus drugs should be applied as early as possible, especially for people at high risk of severe influenza, to avoid the blind use and inappropriate use of antibiotics, and only secondary infections should be considered for the application of antibiotics. How to treat influenza A. It includes two parts: 1, symptomatic treatment, high fever can be given physical cooling or antipyretic drugs; cough, cough sputum serious people given expectorant cough medication; hypoxia can be taken nasal catheter oxygen. 2, antiviral treatment must be as early as possible, preferably in the onset of the disease within 48 hours of the application of late application is often ineffective. Commonly used antiviral drugs is oseltamivir, adults and children’s applications are not the same, according to the instructions strictly separate applications.