Intestinal obstruction is caused by any factor that causes blockage of the intestinal tube. Compression and twisting cause the intestinal contents to not pass normally, leading to obstructive symptoms. Clinically, intestinal obstruction mainly presents with four major symptoms: first, intermittent abdominal pain; second, vomiting, where the higher the location of the obstruction, the earlier and more frequent the vomiting, consisting mainly of food or gastric fluid. If the location of the obstruction is lower, the vomiting is delayed and less frequent and may include fecal matter; third, abdominal distension, which generally occurs after the obstruction has been present for some time, and its severity is related to the location of the obstruction; fourth, cessation of gas and feces discharge through the anus.