Small gas-liquid plane shadow in the small intestine of the abdomen is an imaging term that generally refers to intestinal obstruction. A small gas-liquid plane shadow in the small intestine of the abdomen is a gas-liquid plane shadow that occurs when an intestinal obstruction occurs, where the gas in the intestinal lumen is unable to be expelled from the anus normally and stays in the intestinal canal, where the gas separates from the digestive juices in the small intestine. If it is accompanied by symptoms such as abdominal pain, abdominal distension, nausea, vomiting, cessation of gas evacuation and anal defecation, it can be further judged as intestinal obstruction. When intestinal obstruction occurs, timely consultation should be made, fasting and water fasting, gastrointestinal decompression should be carried out at the same time, water and electrolyte disorders can be corrected or prevented, and enema can also be used to assist defecation, and changes in the condition can be closely observed, and surgical treatment can be carried out if necessary.