1.Patients need to take gas-producing tablets first, 1-2 minutes standing position with the doctor for routine chest and abdomen fluoroscopy, to understand the situation of the chest and observe the presence of gallstones, kidney stones, calcified shadow, the presence of pneumoperitoneum, etc.; 2.Take the standing anterior-posterior position, containing or swallowing a large mouthful of contrast barium, observe whether the swallowing movement is abnormal; 3.Turn the position to the right anterior oblique position, the doctor to observe the passage of barium in the esophagus and the esophagus 4.The patient can massage the abdomen with pressure to easily observe the mucosa of the gastric body and sinus; 5.The examination will be conducted in the prone position again, which is easy to show the morphology of the mucosa at the bottom of the stomach; 6.After the examination of the gastric mucosa, the doctor will ask the patient to take a cup of barium about 400-600ml at a time or in parts to observe the outline, morphology, peristalsis of the stomach after filling and the passage of barium through the pyloric duct, and if necessary, take a film.