Indigestion can cause fever. Indigestion tends to lead to incomplete digestion and absorption of food, and food residues stay in the intestine for too long, which generates more heat and leads to higher body temperature. If there is gastroenteritis, intestinal dysfunction, it may also lead to indigestion and fever symptoms. You can take domperidone suspension, gas stagnation and gastroparesis granules, and Si Mo Tang oral solution to improve digestion. Fever is recommended to be treated with antipyretic patches, acetaminophen extended-release tablets and other antipyretic drugs, and also with warm water baths. You should pay attention to maintain a light diet, do not overeat, do not eat too greasy meat food. You can eat more fresh vegetables and fruits, such as tomatoes, cucumbers, apples, bananas, grapes, citrus, etc., which help digestion and absorption.