Gastric ulcer barium meal imaging should pay attention to 24 hours before the examination and during the examination, do not take drugs that affect gastrointestinal function and X-ray imaging, such as bismuth and leeks and other indigestible food. Barium contrast is to let the examinee swallow the paste barium sulfate (contrast agent), through the barium and then through the esophagus to reach the stomach, duodenum site after the imaging process to carry out the upper gastrointestinal tract disease examination and diagnosis. Since barium sulfate does not dissolve in water, it will not be absorbed by the mucous membrane of the gastrointestinal tract, so it is basically non-toxic to the human body, and is a safe, non-invasive examination method. It should be noted that barium examination is not recommended for patients with acute respiratory tract infection, severe cardiac, hepatic and renal insufficiency and positive iodine test. Do not take astringents, laxatives, iodine-containing, iron, calcium and bismuth preparations 24 hours before the examination, so as not to affect the results of barium examination by visualization. 24 hours before the examination should eat easy to digest, less fiber food, such as noodles, millet porridge, etc.; the morning of the examination day should be fasting, including water and drugs. Gastric ulcer patients doing barium meal imaging should be under the guidance of the doctor and follow the doctor’s instructions.