The typical clinical manifestations of intestinal obstruction can be abdominal pain, abdominal distension, nausea, vomiting, and anal cessation of defecation and exhaustion. In clinical practice, it is divided into high obstruction and low obstruction according to the height of the obstruction site. Generally, the symptoms of nausea and vomiting appear early in high obstruction, while the symptoms of nausea and vomiting appear later in low obstruction, mainly manifesting as abdominal distension. Therefore, the absence of nausea and vomiting in intestinal obstruction does not necessarily mean that the symptoms are relieved, and may even be aggravated.