Common causes of gas and farts in the stomach include gastrointestinal disorders, indigestion, and poor eating habits. 1. Gastrointestinal dysfunction: It may be indigestion due to slow gastrointestinal peristalsis. This condition may cause food to stay in the gastrointestinal tract for too long, with too much fermentation gas, leading to a lot of gas and farts in the stomach. 2. Indigestion: This includes functional indigestion and organic indigestion. There are many causes of indigestion, including chronic inflammation in the stomach and duodenum area, mental unhappiness of the patient, prolonged sullenness or irritation, and so on. When indigestion occurs, food or feces in the intestines ferment under the action of intestinal bacteria, producing more gas and leading to abdominal distension, accompanied by increased anal discharge. 3. Bad eating habits: some patients eat too fast, or talk during meals, and eat into the wind and other bad eating habits, which can lead to a lot of air sucked into the stomach. If the stomach and intestines can’t expel the excess air in time, it may lead to the phenomenon of more gas in the stomach and more farts. Patients with symptoms of excessive gas and farts in the stomach should go to the gastroenterology department of the hospital for examination and treatment under the guidance of a professional doctor after eliminating physiological causes.