Gastroscopy without intubation should refer to capsule endoscopy, the process of this examination is to let the patient swallow a capsule with a camera, this capsule with the esophagus, stomach, duodenum, small intestine, colon peristalsis, peristalsis while taking pictures, so that you can observe the stomach, esophagus, duodenum, colon, small intestine whether there are lesions. The following situations may occur during the examination: if the patient himself suspects obstruction or growth of a tumor, when the capsule is obstructed when passing through these areas, it will cause the capsule to be retained in the body, and surgery will be needed to take it out. In addition, capsule endoscopy can only find lesions, and can not judge the nature of the lesion, if necessary, or need to review the electronic gastroscopy or electronic colonoscopy or small bowel, the site of the lesion to take a biopsy to clarify the nature of the lesion.