When you have a high fever, because the body’s digestive and absorption functions are reduced, gastrointestinal peristalsis is also weakened and appetite is poor, so you should avoid eating excessively greasy, fried and deep-fried stimulating foods, mainly because the above foods are not easy to digest and can easily lead to nausea, bloating and other uncomfortable symptoms, and patients are suitable to eat light, easily digestible foods. When fever is present, the metabolic rate of the body is accelerated and the decomposition of body proteins is accelerated, so protein-based foods such as eggs, lean meat, fish and soy products should be appropriately supplemented. The cooking method should avoid more oil and try to use more water methods such as steaming, boiling and stewing. Patients with fever need to drink more water, urinate and sweat many times to help recovery, but while urinating and sweating, it will lead to an increase in the excretion of water-soluble vitamins such as B vitamins and vitamin C. Therefore, they should also eat more fruits and vegetables rich in vitamins and various trace elements.