The small belly is distended like pregnancy, generally speaking, often by the following causes: a. Complete intestinal obstruction is mostly seen in elderly patients, due to the significant weakening of gastrointestinal peristalsis, can cause a large amount of fecal stagnation in the intestinal canal of the small abdomen, appearing obvious swelling, percussion can be manifested as a drum sound, X-ray or CT examination can confirm a large amount of gas and fluid accumulation in the intestinal canal, at this time can be through low-pressure enema, oral lactose, pantothenic glucosamine At this time, we can promote the excretion of intestinal contents through low-pressure enema, oral lactulose, pantopamine and other drugs to reduce the symptoms of abdominal distension and pain. Second, tumor lesions in the abdominal cavity, such as giant mesenchymal tumors of the small intestine, ovarian cysts can cause significant extrusion of the small abdominal intestine and small abdominal distension, at this time can be improved through the abdominal CT or ultrasound examination to clarify the nature and source of the lesion. Early surgical resection can reduce the compression of intestinal canal in the abdominal cavity and promote early recovery.