Always have gas in the stomach to consider the digestive system disease, you can hang up the gastroenterology examination. There is always gas in the stomach should be flatulence, which may be caused by indigestion, gastritis, gastric ulcer, enteritis, etc. It is often necessary to go to the gastroenterology department of the hospital, and make a clear diagnosis through the doctor’s palpation, gastroscopy, enteroscopy, and so on. However, gas in the stomach may also be caused by physiological reasons, such as eating too many potatoes, onions and other gas-producing foods, or eating too fast, resulting in eating a lot of air, which leads to bloating. If there is always gas in the stomach and the symptoms do not improve, it is recommended to go to the hospital in time to get a clear diagnosis and cooperate with the doctor for treatment.