Frequent flatulence, i.e. bloating, may be caused by chronic gastritis, irritable bowel syndrome, intestinal cancer and other diseases. 1. Chronic gastritis: chronic gastritis will affect the digestive function of the stomach and intestines, resulting in indigestion and poor absorption of food, and the patient will suffer from bloating. 2. Irritable Bowel Syndrome: Irritable Bowel Syndrome will slow down the peristalsis of intestines and stomach, and the intestines will be distended, and the patients will suffer from abdominal bloating. 3. Bowel cancer: the bowel affected by cancer may lead to decreased function, the body’s ability to digest food decreases, in the process of food can not be fully digested, the intestines will produce a lot of gas, which usually causes abdominal bloating. Frequent bloating may also be caused by other diseases such as reflux esophagitis. It is recommended to go to the hospital to clarify the cause of the disease.