When a patient presents with the above clinical features and gastric torsion is suspected, x-ray examination can often help confirm the diagnosis. For acute gastric torsion, the diagnosis is mostly uneventful as long as the disease can be thought of. If a gastric tube is inserted to confirm the diagnosis, it should be inserted slowly and not forcibly to avoid damage or perforation of the gastric wall. Chronic gastric torsion is more difficult to diagnose clinically because there is no complete obstruction and its symptoms are nonspecific. Differential diagnosis of gastric displacement: 1. Acute gastric dilatation: the abdominal pain is not severe in this disease, but the upper abdominal distension is predominant, there is nausea and frequent weak vomiting, vomit contains bile, vomiting volume is large; a gastric tube can be inserted and a large amount of gas and liquid can be extracted. Patients often have signs of dehydration and alkalosis. 2.Gastric cancer: the pain in the upper abdomen is lighter, and the abdominal mass is mostly in the right side of the upper abdomen near the pylorus, nodular in shape. It can be distinguished from gastric torsion by X-ray signs or endoscopic examination. 3, pyloric obstruction: most have a history of peptic ulcer, can vomit up the food, the amount of vomit is more, X-ray examination found pyloric obstruction, endoscopy can be seen ulcer and pyloric obstruction. 4, chronic cholecystitis: non-acute attacks, the patient shows symptoms of epigastric vague pain and indigestion, induced by eating greasy food. There is pressure pain in the right quarter rib area, radiating to the right shoulder, but there is no severe abdominal pain and nausea and dry vomiting. Gastric tube can be inserted smoothly, and positive findings can be found in duodenal drainage and cholecystography. 5, adhesional intestinal obstruction: patients mostly have a history of abdominal surgery, manifested as sudden paroxysmal abdominal pain, exhaustion and defecation stop, vomit with fecal odor, distension and pain in the whole abdomen; visible intestinal pattern, intestinal sounds are hyperactive in the early stage and diminished in the late stage. The gastric tube could be inserted smoothly, and X-ray abdominal fluoroscopy showed a trapezoidal liquid level in the intestinal cavity.