Night bloating and severe stomach bulge may be caused by indigestion, may be caused by Helicobacter pylori infection, and may be related to electrolyte disorders and so on. 1. Indigestion: overeating, eating greasy food, eating too much sweet potatoes and other foods, poor gastrointestinal motility, etc., can cause abdominal distension and discomfort. 2. Helicobacter pylori infection: it will stimulate the gastric and duodenal mucosa, make the gastrointestinal tract dysfunction, intestinal flora imbalance, etc., abdominal pain, abdominal distension, uh, and other symptoms. 3. Electrolyte disorders: such as potassium ion metabolism abnormalities will appear generalized weakness, chest tightness, abdominal distension and other symptoms. If the symptoms of abdominal distension are not relieved or accompanied by other symptoms, you should go to the hospital in time, and give targeted treatment after clarifying the cause under the guidance of professional physicians.