As the name implies, e-colonoscopy can only see the colon, so the small intestine cannot be examined. If you want to check the small intestine, you need to do small intestine microscopy, but small intestine microscopy is more complicated, so most hospitals do not carry out. You can also choose to have a capsule endoscopy, which can find out if there are lesions in the small intestine. The capsule endoscopy is performed by preparing the intestine first and then swallowing a capsule-like endoscope, which allows the entire digestive tract to be viewed, and pictures of large, obvious lesions can be captured by computer. If there is a lesion that requires a biopsy that cannot be done with a capsule endoscope or if a microscopic procedure is needed, it is necessary to switch to small bowel microscopy. For people with small intestinal lesions or suspected small intestinal lesions, it is recommended that abdominal CT or barium meal examination be performed under the guidance of a specialist, if necessary.