There is no optimal clinical approach. The treatment of fever with food retention, which is usually caused by indigestion, can be treated with physiotherapy and oral medication such as mosapride and ibuprofen. 1. Physical therapy: Physical therapy can also be used. If the fever is lower than 38.5℃, physical cooling can be done, such as using antipyretic patches or warm water to wipe the whole body. Usually, the body temperature can be gradually normalized. 2. Oral medicine: patients with food retention are usually caused by eating too much food, which cannot be fully digested, resulting in slow gastrointestinal peristalsis, food retention and fever. When fever symptoms appear, mainly related to infection factors, may be caused by eating unclean diet. You can promote intestinal peristalsis through medication, such as mosapride citrate tablets, domperidone tablets and other drugs to promote gastrointestinal peristalsis and improve the symptoms of food accumulation. Once the body temperature reaches 38.5 ℃ or above, oral ibuprofen granules, aspirin enteric-coated tablets and so on should also be taken for antipyretic treatment. Antibiotics such as norfloxacin can be taken if there is bacterial infection. It is recommended that during the use of medication, it should be used under the guidance of a physician to avoid patients taking it blindly.