There are various ways to examine the small intestine, including barium contrast, CT colonoscopy, MRI, capsule enteroscopy, etc. The safest and most affordable way to examine the small intestine is barium contrast. Among them, the safest and most affordable way is small bowel barium contrast examination. The small intestine belongs to the cavity organs, and barium sulfate is mostly chosen as the contrast agent. Barium sulfate is a white powder that does not dissolve in water. Barium has a high atomic number and is not easily penetrated by X-rays. Filling the small intestine can form a sharp contrast with the surrounding tissues. Barium small bowel imaging includes conventional oral small bowel imaging and small bowel enema imaging. Routine oral small bowel imaging is the completion of an upper gastrointestinal examination followed by timed tracking of the barium through the small bowel until the barium reaches the ileocecal region. Small bowel enema contrast is a cannula inserted into the jejunal flexure of the duodenum and barium and gas are injected to obtain a double contrast effect of gas and barium. This test is contraindicated in people with intestinal obstruction, intestinal perforation, and glaucoma. If you need to be examined, you need to go to a regular medical institution to avoid serious complications. In addition, small bowel barium meal imaging has many limitations, and many small bowel lesions may not be detected. Therefore, small bowel lesions, the specific tests that should be done, should be chosen in accordance with medical advice.