There are more diseases that cause abdominal pain and fever, mainly the following: 1, acute gastritis: abdominal pain under the sword, accompanied by fever, nausea, vomiting; 2, acute cholecystitis: history of gallstones, abdominal pain, fever, nausea, vomiting, and even jaundice; 3, acute pancreatitis: history of gallstones, overeating or hyperlipidemia, abdominal pain, nausea, vomiting, fever, elevated white blood cells; 4. If periumbilical abdominal pain, fever, diarrhea, consider acute enteritis, if accompanied by anal non-ventilation and non-defecation, incomplete intestinal obstruction or intestinal obstruction needs to be excluded; 5. Urinary tract infection or urinary stones: abdominal pain, fever with frequent urination, urinary urgency, painful urination, red or white blood cells in urine.