Abdominal CT is a frequently used clinical examination. Generally speaking, the following are the main points to look at abdominal CT: First, it is necessary to clarify whether there are lesions of substantial organs, such as liver, kidney, spleen and pancreas. If there is low density shadow around the substantial organs, it mostly suggests that there is fluid around the organs. If there is high-density shadow inside the substantial organs, it indicates that there is local calcification or stone formation. If the patient’s intestinal dilation is obvious and accompanied by air-fluid plane, it mostly indicates complicated intestinal obstruction, and the specific site of intestinal obstruction can be confirmed by observing different obstruction planes, which has important guidance significance for surgery and next treatment. Third, if the patient has multiple high-density shadow in the gallbladder, and the boundary around the gallbladder is unclear, and the volume of the gallbladder is obviously enlarged, it mostly suggests that the patient has gallbladder stones combined with acute cholecystitis, and surgery is needed.