The causes of flatulence can be divided into two main types: physiological and pathological. If the cause is physiological, the patient can not worry too much, if the cause is pathological, the patient needs to be treated for the cause under the guidance of a doctor. I. Physiological causes: 1. excessive inhalation of gas: when patients eat too fast or chew gum, they will swallow some of the air and have too much gas in the stomach, causing flatulence symptoms, which can generally be relieved by themselves; 2. poor diet: if patients eat drinks and food that produce too much gas, it will lead to more gas in the stomach, causing patients to have flatulence; 3. indigestion: when patients have indigestion, food digestion and absorption slow down, patients will have symptoms of gas, at this time, patients can take drugs such as digestive enzymes, stomachic elimination tablets and omeprazole under the guidance of doctors to relieve symptoms. Second, pathological causes: 1, inflammation of the digestive system: gastric ulcer, cholecystitis, pancreatitis, etc., due to the influence of inflammatory factors, resulting in slowing down the digestion and absorption of food, causing gas and other phenomena, patients can follow medical advice to use anti-inflammatory, gastric mucosa protection, increase gastric power drugs; 2, peptic ulcer: such as gastric ulcer, pyloric ulcer patients, there will be gas and other symptoms, in addition, patients may also be manifested as heartburn, acid reflux and other symptoms, patients can follow medical advice to use drugs to protect the gastric mucosa; 3, gastric cancer: patients with gastric cancer often have more definite upper gastrointestinal symptoms, such as epigastric discomfort and flatulence, etc. At this time, patients should promptly go to the hospital for gastroscopy, upper gastrointestinal barium meal and other examinations, and after a clear diagnosis, surgery or radiation therapy can be performed under the guidance of a doctor; 4, other digestive system diseases: such as pyloric obstruction Due to the obstruction of the pylorus, the stomach contents cannot enter the intestine smoothly and are retained in the stomach in large quantities, which will lead to symptoms such as gas and bloating.