Fever due to food accumulation usually occurs in infants and young children, due to underdevelopment of gastrointestinal function, poor dietary habits, overeating, eating more greasy food, and frequent constipation. Fever from food retention usually resolves in 3-5 days, but different body types and different degrees of illness may affect the healing time of the child. If the child is not well and is often constipated, the fever may persist for half a month or so. When there is accumulation of food and fever, it is important to give timely medicines to help digestion, such as Compound Chicken Nei Jin San and Pediatric Seven Star Tea to help digestion. Babies with fever can use cold wet compresses on the head to physically lower the temperature. If the fever exceeds 39 ℃ or more, it is recommended to take ibuprofen suspension with fever-reducing suppositories for treatment. You also need to pay attention to give your child more fruit juice, vegetable juice, drink more warm boiled water. Usually do not give the child too full diet, you can drink more thin rice, eat more vegetables and fruits to promote defecation.