Inflammation of tonsils refers to tonsillitis, and usually tonsillitis will have fever for 3 to 5 days, depending on the person. The body temperature can be up to 39 ~ 40 ℃, accompanied by chills, vomiting and other symptoms. Tonsillitis belongs to a common upper respiratory tract infectious diseases. In general, tonsillitis will have a fever for 3 to 5 days, the onset of the disease is more acute, however, due to the physical quality of each patient and the actual condition of different factors, so the specific time of fever can not be generalized, there are obvious individual differences. Fever caused by tonsillitis has a more acute onset, and the patient’s temperature can be as high as 39 to 40 ℃, which belongs to the category of high fever. At this time, it is usually considered to be the acute stage of the disease, the patient will also appear sore throat, chills, vomiting, lethargy, loss of appetite, generalized pain and other symptoms. It is necessary to follow the medical advice to apply ibuprofen and other antipyretic drugs. At the same time, drink plenty of water, light diet, bed rest, and keep the bowels open. Tonsillitis patients need to follow the doctor’s instructions for standardized treatment.