In order to study motility of the stomach and to establish practical significance of a number of quantitative radiological criteria of its motility 60 patients with peptic ulcer and duodenal ulcer and in the presenting state and 8 virtually healthy persons aged from 18 to 57 years were examined. There were 62 men and 6 women. Thirty-nine suffered from duodenal bulb ulcer, 12 from gastric ulcer, and 9 had a presenting condition. Three patients with peptic ulcer had a pronounced pain syndrome; 9 people had no pain at the time of X-ray examination.