Most children with fever caused by tonsillar suppuration have a gradual decrease in body temperature in about 3-5 days, but it depends on the specific situation and cannot be generalized. Fever due to tonsillar suppuration in children is usually caused by viral or bacterial infections due to the lowered resistance of the child’s organism and cold. The duration of fever varies depending on the child’s age, immune function and the severity of the infection, and in most cases, the fever lasts about 3-5 days. If the child’s tonsils are mildly enlarged and the fever is mild, oral antibiotics can be administered and the fever will improve after the inflammation is controlled for about 3 days. If the child is young and has poor immune function, the fever may last up to about 1 week. If the fever does not resolve and persists, the child should be alerted to the presence of other complications, such as peri-tonsillitis and peri-tonsillar abscess, etc. It is recommended that the child be seen by a pediatrician promptly for a clear diagnosis and targeted treatment. In addition to active symptomatic treatment, children should also drink more warm water, pay attention to a light diet, and avoid overly hot and spicy food, which is conducive to the improvement of the condition.