Feeling bloated is generally considered to be gastric flatulence, the causes of gastric flatulence are divided into physiological and pathological, physiological factors such as psychological stress, pathological factors such as duodenal ulcer, gastritis or intestinal tumors caused by lesions, it is recommended to consult a doctor to find out the cause of the disease in a timely manner. 1. Physiological phenomenon: if the patient has anxiety, depression or psychological stress, he may swallow a lot of gas involuntarily and experience flatulence; he may also experience flatulence due to the increased sensitivity of the internal organs. 2. Pathologic phenomena: (1) Duodenal ulcer: Duodenal ulcer affects the peristaltic ability of the intestines and stomach, resulting in weakening of peristaltic function and stagnation of food in the digestive system causing symptoms of flatulence. (2) Gastritis: Gastritis may cause acid reflux to the point of indigestion and may be accompanied by symptoms of flatulence. (3) Intestinal tumor lesions: Intestinal tumor lesions, such as colon cancer, may cause abdominal bloating and pain due to the blockage of intestinal lumen by tumor tissues, which leads to the unobstructed flow of food or feces through the tumor. If physiological reasons are ruled out, the patient should consult a doctor in time to find out the specific cause and get appropriate treatment if necessary.