Children infected with influenza A virus should seek prompt medical treatment. In addition to taking antiviral medication (commonly known as Lianhua Qingdian capsule) according to the doctor’s advice, they should also develop good hygiene habits and take appropriate physical exercise to strengthen their resistance. Influenza A virus is a virus that can cause acute severe respiratory infections and is usually spread through droplets and direct contact. The clinical manifestations of influenza A virus infection are related to the individual’s immunity, and children are usually susceptible to serious complications due to their immune deficiencies, with nausea, vomiting, and even coma appearing several days after respiratory tract infection. In the early stage of influenza A infection, parents may not be able to detect whether it is influenza or common cold. If the respiratory symptoms are more severe or do not improve, and even if complications such as nausea and vomiting occur as mentioned above, parents should be vigilant and go to the hospital as soon as possible in order to avoid delaying their condition.