Stomach bloating may be caused by indigestion, gastritis, intestinal obstruction and so on. 1. Indigestion: If indigestion is caused by intestinal flora disorder, the intestinal wall may produce too much gas, leading to bloating symptoms; if indigestion is caused by weakened intestinal peristalsis, it may result in the gas produced during the normal decomposition of food not being able to be discharged out of the body, thus resulting in a bloated stomach. 2. Gastritis: Gastritis patients’ gastric mucosa will undergo inflammatory changes, resulting in gastrointestinal dysfunction, leading to weakening of gastrointestinal peristalsis, which will lead to bloating and flatulence. 3. Intestinal obstruction: intestinal contents of patients with intestinal obstruction are obstructed when they pass through the intestines, and as more and more contents are piled up, it may lead to gas or feces stagnation in the intestines, thus resulting in the situation of stomach bloating. When patients have symptoms of stomach bloating and distention, they should go to regular hospitals in time to find out the cause of the disease under the guidance of professional doctors and carry out treatment to avoid delaying the condition.