Frequent vomiting in the elderly may be related to physiological factors such as improper diet, or pathologic factors such as pyloric obstruction, intestinal obstruction, or after major gastrectomy. 1. Physiological factors: due to the recent improper diet, the burden on the gastrointestinal tract becomes heavy, which reflexively enhances the retrograde peristalsis of the stomach and the small intestine, thus making the stomach contents vomit out of the body, generally related to overeating, eating too much spicy food, alcoholism and so on. 2. Pyloric obstruction or intestinal obstruction: Due to the narrowing and blockage of the pylorus of the stomach caused by ulcers and tumors, gastric juice and food are accumulated in the stomach and cannot be fully absorbed by the small intestine, which can lead to the bulging of the epigastric region, gastric pain, gastric distention, nausea, vomiting, vomit containing overnight food with sour smell, relief of gastric distension after vomiting, and symptoms such as sunken eyes and dry skin after a large amount of vomiting. Patients with complete intestinal obstruction will stop evacuating and defecating, and patients with upper part of the obstruction mainly show vomiting. 3. After major gastrectomy: Patients with a history of major gastrectomy may have esophagogastric anastomotic stenosis and may exhibit vomiting, abdominal distension, difficulty eating, and weight loss. In addition, there are many other causes of frequent vomiting in the elderly, such as gastric ulcers, chronic gastritis, and diabetes. If symptoms occur, it is recommended to go to a regular hospital in a timely manner, to clarify the cause of the disease, and then carry out targeted treatment under the guidance of the doctor.