”Capsule Endoscopy” is called “Intelligent Capsule Gastrointestinal Endoscopy System”. When a patient undergoes an examination, he only needs to take a smart capsule with water, and it will follow the route of stomach-duodenum-jejunum and ileum-colon and rectum through the peristaltic movement of gastrointestinal muscles, doing a full course of ” digestive tract photographer”, and then transmit the images as a digital signal to the recording device carried by the patient. The whole process takes about 8 to 10 hours, during which the patient can leave the hospital to work and live normally, and when the time is up, the patient simply sends back the data recorder, and the doctor checks the lesions in the esophagus, stomach, small intestine and large intestine and makes a timely diagnosis based on the nearly 80,000 photos in the recorder. At the end of the mission, the capsules are excreted on their own with the feces. Patients or healthy checkups with the following conditions are suitable for capsule endoscopy: 1. unexplained gastrointestinal bleeding, especially suspected small intestine bleeding; 2. unexplained iron deficiency anemia; 3. unexplained chronic abdominal pain, diarrhea, and wasting; 4. clinically suspected inflammatory bowel disease, intestinal tuberculosis, and small intestine tumors; 5. other imaging examinations suspected small intestine lesions; 6. middle-aged or older checkups in good economic condition 6. middle-aged people with good financial situation, etc. Capsule endoscopy has the advantages of convenient examination, no trauma, no wires, no pain, no cross-infection, and does not affect the normal life and work of patients, which expands the field of view of gastrointestinal examination and overcomes the defects of traditional insertion endoscopy such as poor tolerance, unsuitable for old and weak and critical conditions, and can be the preferred method for diagnosis of gastrointestinal diseases, especially small intestinal diseases, and is called the revolution and direction of endoscopy in the 21st century. It is called the revolution and direction of the development of endoscopy in the 21st century.