If your stomach suddenly becomes bloated and large, you need to consider the following situations:1. In your daily diet, if you eat relatively fast, or if you enter too much air when you eat, it can lead to abdominal bloating and abdominal pain.2. If the ingredients that you eat are prone to flatulence, commonly beans, onions, groundnuts, etc., which themselves are prone to flatulence.3. If you suffer from gastrointestinal tract disorders, common Dyspepsia, intestinal flora imbalance, intestinal obstruction, etc., there may also be a slowing down of intestinal peristalsis, or even obstruction of intestinal peristalsis, which leads to a large amount of gas remaining in the intestinal tract.4. If there is a decrease in the secretion of digestive enzymes, insufficient secretion of bile and pancreatic juice or obstruction of elimination, commonly cholecystitis, biliary obstruction, pancreatic cancer, gallbladder cancer, etc, bloating may also occur.