Gastrointestinal examination, in addition to colonoscopy, can be perfected by abdominal CT, abdominal plain film, barium meal imaging of the digestive tract, capsule endoscopy and so on. For gastrointestinal diseases, such as colon cancer, stomach cancer, intestinal polyps, etc., most of them are found to be diagnosed through colonoscopy or gastroscopy. There are also some gastrointestinal diseases that can be found through other tests. Abdominal CT is a scan of the abdomen that can detect diseases such as intestinal obstruction, intussusception, and intestinal occupations. Plain films of the abdomen can detect diseases such as intestinal perforation, intestinal obstruction, and intestinal torsion. Barium meal imaging of the digestive tract is performed by taking barium orally and observing the passage of barium through the gastrointestinal tract under the instrument, which can detect occupational diseases of the gastrointestinal tract or peptic ulcers. Barium meal imaging is contraindicated for those who suspect intestinal obstruction. Capsule endoscopy is where the patient orally takes a smart capsule with a camera, and during the passage of the capsule through the gastrointestinal tract, the monitor observes the lesions in the gastrointestinal tract, which is often used to check for small bowel diseases. In addition gastrointestinal examination can also be performed blood tests such as inflammation indicators, tumor markers, Helicobacter pylori breath test. Gastrointestinal diseases recommend timely medical treatment, under the guidance of professional doctors, standardized examination, reasonable treatment.