Acute intestinal obstruction requires surgical treatment in the following cases: 1, acute intestinal obstruction cannot be relieved by conservative treatment; 2, a clear diagnosis has been intestinal tumors, or congenital intestinal malformations, which must be operated; 3, intestinal strangulation or intestinal ischemic necrosis may occur or has occurred, which must be operated; 4, the diagnosis is clear for intestinal torsion, intestinal intussusception, which is ineffective by conservative treatment; 5, intestinal obstruction of unknown cause must be operated immediately if it is combined with infectious shock and diffuse peritonitis.