Small bowel examination methods include small colonoscopy, capsule endoscopy, small bowel CT, etc. There is no such thing as the “best way” to examine the small bowel. 1. Small colonoscopy: through the anus into the examination, you can observe the specific situation of the middle and lower ileum, if the mouth into the examination, generally able to check the upper part of the ileum and the jejunum. 2. Capsule endoscopy: capsule endoscopy in the examination, you need to take a small capsule orally, the small capsule is equivalent to a camera, with the entry of the capsule, it will take real-time pictures of the passing intestine, and it can make it clear whether there are occupying lesions, mucosal lesions and other conditions in the small intestine. However, patients with intestinal obstruction should avoid using it. 3. Small bowel CT: Through the image presented by small bowel CT, it can clearly see whether there is any reinforcement, thickening, tortuous, etc. inside the small bowel wall, but it needs to be examined after the use of laxatives. It is recommended that the patient should seek medical advice in time, and the doctor will choose the appropriate method to examine the small intestine according to the patient’s condition.