Intestinal obstruction is caused by internal or external factors of the intestinal canal that do not pass smoothly through the intestinal canal causing blockage, and the clinical manifestations are mainly abdominal pain, abdominal distension, nausea, vomiting, anal stoppage of exhaustion and defecation. Since the intestinal contents cannot pass smoothly, the continuous accumulation of intestinal fluid above the obstruction will cause abdominal distension and abdominal pain, so abdominal pain will definitely occur in intestinal obstruction. But in the early stage, abdominal pain is lighter and abdominal distension is more obvious, and with the prolongation of obstruction time, abdominal pain will become heavier and heavier if the obstruction is not lifted, and in some cases, there will be rebound pain. If not operated, some intestinal tubes will be necrotic and the pain will be very severe causing toxic shock, which is often life-threatening, so early surgery is a better way to lift the obstruction.