Children with influenza A who have a high fever that doesn’t go away are at risk, and the rapid progression of the disease can be life-threatening. Influenza A usually refers to influenza A virus caused by influenza, children who have been ill with a high fever, may belong to the pneumonia type or toxicity type of influenza, these two types of patients, although less common, but the death rate is higher, the risk is greater. Pneumonia type of pediatric patients, can be seen in high fever, shortness of breath, cyanosis, hemoptysis, extreme fatigue and other symptoms, and even respiratory failure, antibacterial drug treatment is ineffective, and the later stage of respiratory and circulatory failure. Toxic type of children’s patients, may appear high fever does not go away, systemic toxemia and the nervous system, cardiovascular system damage manifestations, severe cases may appear shock, disseminated intravascular coagulation, circulatory failure and so on. It is recommended to actively follow the medical advice treatment. At present, the most effective way to prevent influenza from causing disease is to receive influenza vaccination in time, and susceptible people and those who have not yet had the disease should be vaccinated in time under the premise of no contraindications.