X-ray barium meal check used to be one of the very commonly used clinical examination methods, barium meal itself is not harmful, the only harm is that the exposure to radiation during the examination process will have a certain degree of radioactivity, so there will not be any adverse effects of a single examination. In the 70’s and 90’s, since gastroscopy and colonoscopy were not popularized in gastroenterology, most of the examinations of gastrointestinal diseases relied on X-ray barium meal examination. Recently, due to the popularization of gastroscopy and enteroscopy, the barium X-ray examination has been significantly reduced, and is even almost non-existent in many hospitals.The barium X-ray examination can be used as an auxiliary examination for gastrointestinal diseases as well as a basis for diagnosis, including examination of the esophagus, stomach, and duodenum, and barium enema is also included.