Influenza A is a serious disease due to its rapid spread and general susceptibility of the population. Influenza A is an acute respiratory disease caused by influenza A virus, mainly through droplet transmission, with a high degree of transmissibility, rapid transmission speed, the population is generally susceptible to the characteristics of the outbreak if not timely prevention and control is likely to occur, so that the number of people suffering from a significant increase in the number of infections, belonging to China’s category B infectious diseases. Symptoms of influenza A mainly include fever, headache, myalgia, runny nose, flushing, children commonly abdominal pain, diarrhea, vomiting, etc., may be complicated by pneumonia, encephalitis, meningitis, myocarditis, etc.. Children, the elderly and immunocompromised people are prone to severe influenza, which can be fatal in severe cases, and need to use antiviral treatment such as oseltamivir and zanamivir under the guidance of a doctor, and symptomatic cooling. Influenza A focuses on prevention, and during periods of high incidence of influenza, you need to go to less populated areas, wear a good mask, and do a good job of hand hygiene to reduce the risk of infection. Medications should be used under the guidance of a medical professional and should not be used at random.