Whether a patient with intestinal obstruction will have defecation is objectively analyzed based on the different planes of intestinal obstruction and whether the gastrointestinal function is gradually recovered. If the plane of intestinal obstruction is low, such as obstruction of the intestinal canal between the colon and rectum, and the gastrointestinal function recovers slowly. Its main manifestations are abdominal pain, abdominal distension, nausea, vomiting, etc., and there will be no exhaustion or defecation. Second, if the plane of intestinal obstruction is higher, such as proximal jejunum and ileum obstruction, gastrointestinal function recovers faster, and the intestinal tube below the plane of obstruction may show the performance of exhaustion and defecation. If the patient is given oral lactulose, four-millennial soup and low-pressure enema gastrointestinal decompression and other treatment measures, the peristaltic function of the intestinal tube can be restored more quickly, so as to completely lift the intestinal obstruction and achieve better treatment results.