Flatulence after eating may be caused by food factors, disease factors and other reasons. 1. Food factor: when the patient consumes food that is easy to produce gas, such as radish, soybean and other foods will cause the patient to experience gastric distension; when the patient uses too spicy and stimulating greasy food, it will lead to stimulation of the patient’s stomach and intestines and symptoms of indigestion, which will also cause gastric distension in the patient. 2. Disease factors: when the patient occurs digestive diseases, such as chronic gastritis, gastric ulcer and other diseases, can make the gastric mucosa damage, digestive juices can not be normal secretion, and at the same time can lead to gastrointestinal peristalsis function is reduced, resulting in food retention, resulting in gastric distension symptoms. When the patient occurs gastric distension, in addition to the above factors can lead to the symptoms of gastric distension, it may also be caused by irritable bowel syndrome, constipation and so on. Patients can go to the hospital for examination and timely treatment according to their actual situation.