Sudden and rapid bloating of the stomach may be caused by consuming too much gas-producing food or too much air entering the gastrointestinal tract, or it may be caused by cirrhosis of the liver, ascites, intestinal obstruction and other diseases. 1. Physiological reasons: for example, consuming too much gas-producing food, such as sweet potatoes, radishes, etc., or too much gas entering the gastrointestinal tract when talking or eating may lead to too much gas accumulating in the gastrointestinal tract, resulting in a feeling of rapid flatulence. 2. Cirrhosis ascites: Cirrhosis large amount of ascites, especially when combined with spontaneous peritonitis, ascites can increase rapidly, can be combined with abdominal pain, fever, etc., may have a sudden rapid bloating. 3. Intestinal obstruction:Intestinal obstruction leads to the obstruction of the passage of intestinal contents, resulting in abdominal distension, abdominal pain, nausea and vomiting, and the cessation of defecation, which can be manifested as sudden and rapid flatulence of the stomach. Patients with sudden and rapid flatulence should go to the hospital for further clarification of the cause and be treated according to the cause under the guidance of the doctor.