The position and form of the stomach vary depending upon the position and habit of the bodym, spatial conditions of the abdominal cavity, phase of respiration, level of the liver and diaphragm. There has been much speculation about the criteria and significance of gastroptosis. Some regardgastroptosis as a manifestation of asthenic habit, while others claim that this entity is a generalized symptom complex. However, it appears that many clinicians in this country prefer to ascribe the gastric symptoms subtly to gastroptosis in the patients in whom no organic lesions can be detectable on x-ray study and physical examination of the gastrointestinal tract. Furthermore, they say that level of the stomach is considerably lower in position and the incidence fo gastroptosis is much gigher in Koreans than in western peoples or in Japanes. Employing a roentgenological study the author made observations on the level and form of the stomach in 100 healthy Korean adults and onthe interrelationships of the stomach, level of the other abdominal viscera and gastric emptying time in 46 symptomatic patients with no demonstrable organic lesions. The interrelationship between the acidity of gastric secretion and the mucosal pattern of the stomach and duodenum was also evaluated in 92 patients in whom no demonsrable organic lesion was found.