The main clinical manifestations of strangulated intestinal obstruction: First, abdominal pain. The abdominal pain is progressively aggravated, and the abdominal pain is most obvious than other types of intestinal obstruction. Second, the anus stops venting and defecating due to the cause of intestinal obstruction. Third, abdominal distension. Abdominal distension is more serious than other intestinal obstruction abdominal distension, can be seen in the abdomen obvious lumps, is caused by enlarged intestinal collaterals. Fourth, vomiting. Vomiting may be accompanied by bloody material, which can be clearly distinguished from other intestinal obstruction. Fifth, severe cases may present with the main manifestations of high fever and chills. Sixth, it may eventually cause shock. Intestinal obstruction can lead to serious infection in the abdomen, which may cause infectious shock if not treated by timely surgery.