Diarrhea and low fever, i.e. diarrhea and low fever, are mostly considered to be related to gastroenteritis, cholecystitis and pancreatitis. 1. Gastroenteritis: patients due to eating unclean or irritating food, resulting in intestinal infections, intestinal parasites of a large number of bacteria, causing diarrhea, low fever and other discomforts. 2. Cholecystitis: mostly due to gallbladder stones, not eating breakfast for a long time, leading to cholecystitis, causing bile reflux, bile stimulation of the gastrointestinal tract, causing diarrhea, low-grade fever. 3. Pancreatitis: mostly related to overeating, drinking a lot of alcohol, due to food or alcohol seriously stimulate the pancreas, resulting in pancreatic cell rupture, necrosis, stimulate the gastrointestinal tract, causing rapid peristalsis of the intestinal tract, diarrhea, and pancreatitis in the release of a large number of inflammatory factors, will also trigger the patient’s low-grade fever. In addition, diarrhea and low fever may also be related to other causes, it is recommended to go to the hospital in time, improve the examination, under the guidance of professional physicians to clarify the cause of the disease, and give targeted treatment or therapy.