Fever of 39.2℃ is considered high fever. In this case, it is necessary to combine other symptoms and laboratory tests, such as routine blood tests, C-reactive protein, Mycoplasma pneumoniae and Chlamydia tests, to identify the cause of the disease, and then treat the cause of the disease, while giving symptomatic treatment such as cooling. High fever is most commonly seen in the early stages of upper respiratory tract infections, usually caused by viruses, when symptomatic antipyretic treatment can be administered first, applying some antipyretic drugs, such as acetaminophen, compound zinc-cloth granules, ibuprofen, etc. For pediatric patients who are not convenient to feed oral medications, you can use some anal antipyretic suppositories or some antipyretic patches. For patients with high fever who have shivering limbs or even high fever convulsions, they need to go to the hospital in time to cool down quickly by intramuscular or intravenous antipyretic drugs, such as effective antipyretic drugs like aminopyrine or lysergic acid, and hormones can be used with treatment in emergency situations. In addition to the common upper respiratory tract infections, there are also some serious urinary tract infections or acute phase of nephritis, and serious phase of cardiovascular disease, all of which can cause high fever, so it is not as simple as blindly going with antipyretics. Therefore, patients with fever must go to the hospital to identify the cause of the disease and systematically treat it.