Influenza A high fever 40 ° C does not go down can take general measures to regulate, if necessary, physical therapy, drug treatment. 1. General measures: Influenza A patients with a high fever of 40°C should drink more water and ensure enough rest. In addition, patients should keep indoor air circulation, should not go to crowded places. And diet should eat light and easy to digest food, such as rice porridge, egg custard and so on. 2. Physical therapy: Influenza A patients with a body temperature of 40 ° C does not return can use a towel wrapped in ice in the armpits, groin, popliteal fossa and other parts of the ice. In addition, you can also help to reduce body temperature by warm water bath, paste fever-reducing patches and other ways. 3. Medication: Influenza A patients with a temperature of 40 ° C need to use acetaminophen, ibuprofen and other antipyretics under the guidance of a doctor. In addition, patients can also follow the doctor’s instructions with oseltamivir and other neuraminidase inhibitors. It is recommended that patients with influenza A fever 40 ° C does not go down need to consult a doctor in a timely manner, the doctor will be based on the patient’s condition to choose the appropriate measures for treatment.