The baby’s poor appetite after the fever subsides is generally a normal phenomenon. Digestive enzymes in the gastrointestinal tract are most active at normal body temperatures, and once they deviate from the temperature where they are active, their catalytic efficiency is greatly reduced, such as pepsin, which breaks down proteins in food with reduced efficiency. After the fever is gone, the human body needs a period of time to repair, the activity of digestive enzymes can not immediately return to the normal state. Gastrointestinal peristalsis will also slow down when the body has a fever, which will also affect the baby’s digestive function. Especially when suffering from fever symptoms due to digestive tract diseases, such as pediatric gastrointestinal cold, due to the digestive tract symptoms are obvious, nausea, vomiting, diarrhea symptoms, but also accompanied by varying degrees of fever symptoms, even after the fever subsides, the baby’s appetite will also be reduced. After the baby’s fever subsides, avoid high sugar, high fat and cold spicy food, the diet should be light and easy to digest, in order to reduce the burden on the digestive system. After the baby’s fever has subsided and there is obvious poor appetite, please consult the hospital in time to avoid delaying the condition.