Abdominal CT can visualize the small intestine, but care needs to be taken to avoid taking heavy metal-containing medications during the test. An abdominal CT scan or enhancement scan can determine the thickness of the wall of the small intestine and the presence or absence of lesions, the presence or absence of lesions outside the lumen of the small intestine, and the presence or absence of lesions in the structures surrounding the small intestine. Abdominal CT scans or enhancement scans play an important role in the diagnosis of small bowel tumors, acute abdomen, mesenteric lesions, and other diseases and in the selection of treatment options. It should be noted that metal interferes with the transmission of radiation, it is recommended to avoid taking drugs containing heavy metals before the examination, CT examination should not be performed after gastrointestinal barium contrast, it is recommended to try to fasting before the CT scan. The appearance of small bowel tumors, acute abdomen and other conditions, it is recommended to go to the hospital in time.