Children with fever 39 ℃ is a moderate fever, in order to avoid prolonged fever to increase the burden of the child’s heart and lungs, should take physical cooling, drug cooling and allopathic measures to reduce fever, as follows: 1, physical cooling: can be used as an auxiliary anti-fever measures. For example, let the child drink warm water several times in small amounts, or warm water bath, in the case of suitable indoor temperature, appropriate to reduce the child’s clothing, and can also apply ice bags, antipyretic paste to cool down. 2.Medication: You can choose ibuprofen, acetaminophen and other drugs. Children over 3 months old are recommended to take acetaminophen, and children over 6 months old can take ibuprofen (children with frequent vomiting and dehydration cannot be used). 3. Etiological treatment: If the body temperature does not decrease, you should go to the hospital in time to check the blood routine, C-reactive protein, and chest X-ray if necessary, in order to clarify the cause and follow the medical advice for targeted treatment. In addition, while reducing fever, it is recommended to pay close attention to the changes in temperature and signs of the child, ensure the stability of the humidity and temperature of the environment, which should be kept at 18℃-23℃, and regularly open the windows to keep the air fresh. During and after the reduction of fever, the child should have a light diet, including a liquid or semi-liquid diet, such as white rice porridge, black rice porridge, millet porridge, flour, noodles, yogurt, fresh vegetables and fruits.