Acute abdomen in the elderly is a disease characterized by acute abdominal pain, which comes rapidly and violently. The clinical manifestations of patients vary from person to person: 1. Different lesions correspond to pain in different parts of the abdomen, such as stomach, duodenum and other pains in the upper middle abdomen, cholecystitis, liver abscess and other pains in the right upper abdomen, acute appendicitis and other pains in the right lower abdomen; 2. Intestinal colic can be accompanied by nausea, vomiting, abdominal pain, constipation, increased bowel sounds, etc.; 3. Biliary colic is often accompanied by jaundice and fever, with positive Murphys’ sign palpable in the liver area; 4. Renal colic is often accompanied by frequent urination, urinary urgency, urine containing protein and red blood cells.