If the small tummy is distended and painful and cannot be defecated when you want to, it is related to factors such as intestinal obstruction, constipation, and intestinal dysfunction. When a patient with intestinal obstruction has a fever, the contents of the intestine cannot be expelled due to a blockage in the intestine and accumulate in the upper part of the intestinal cavity. The excessive accumulation of food residues causes excessive dilatation of the intestinal canal, resulting in a feeling of distension in the small stomach. The excessive accumulation of food residue causes excessive dilatation of the intestinal canal, resulting in a feeling of distension and pain in the belly. Since the food residue cannot pass, the stool also stops. When symptoms of constipation occur, not only is bowel movement slower, but the nature of the stool is also dry. Dry stool during bowel movement can cause irritation to the intestinal tract, resulting in a distended feeling in the small of the stomach. Since the stool is dry, it will be accompanied by difficulty in defecation, so the performance of not being able to pull out will occur. In some people, intestinal function is disturbed, and the intestinal peristalsis is slow and the contents cannot pass through, making it difficult to pass stool. The absorption of gas in the intestine is also affected when intestinal dysfunction occurs, so many people have small stomach distension.