In acute abdomen, abdominal CT can help diagnose acute abdomen, sometimes determine the location and severity of the disease, and help choose the treatment. Abdominal CT has a certain diagnostic value for inflammatory diseases, digestive perforation, hemorrhagic diseases of abdominal organs, vascular diseases and other acute abdominal diseases. 1. Inflammatory diseases: in acute pancreatitis, abdominal CT can help determine whether pancreatitis is edematous or hemorrhagic and determine the severity. 2. Gastrointestinal perforation: In case of gastrointestinal perforation, abdominal CT can help determine the location of the perforation. 3. Hemorrhagic disease of abdominal organs: CT abdomen can help to determine whether the bleeding is from organs such as liver, spleen or kidney. 4. Vascular diseases: In case of embolization of the superior mesenteric artery, CT abdomen can also be of great help in diagnosis. In addition, intestinal obstruction, peritonitis, etc. can also be diagnosed by abdominal CT. Abdominal CT is of great value in the diagnosis of acute abdomen. However, the clinical diagnosis of acute abdomen can also be diagnosed by other imaging means such as ultrasound, X-ray, etc., and needs to be supplemented by laboratory tests and other tests to confirm the diagnosis, which cannot be confirmed by abdominal CT alone.