Tonsillitis fever usually takes about 3-7 days to get well. Tonsillitis belongs to the upper respiratory tract infection caused by the disease, usually acute attack, easy to cause the symptoms of fever, after timely treatment with medication, usually about 3 days can be reduced fever. If the tonsillitis is more serious, the fever may persist, and even with active treatment, it may take about 7 days to get well. If a peritonsillar abscess is caused, the symptoms are more severe and the fever will last longer. When symptoms of tonsillitis occur, it is important to visit the ENT department of a regular hospital for timely examination and treatment. During the attack of tonsillitis, it is recommended to drink more plain water to promote the body’s metabolism and help the inflammation subside. Diet should be light, eat more fresh vegetables and fruits, do not eat spicy and stimulating food.