Different types of intestinal obstruction have different characteristics of intestinal sounds: 1, mechanical intestinal obstruction: intestinal sounds are hyperactive, the frequency of intestinal sounds can reach more than 6 times/minute, and the duration is longer. If the condition of intestinal obstruction is aggravated, the bowel sounds will be relatively weakened; 2. Dynamic intestinal obstruction: First, paralytic intestinal obstruction, because the intestine is in a paralyzed state, the bowel sounds will be weakened or even disappear. Secondly, in spastic intestinal obstruction, the intestine is in an excited state for a long time, producing more ineffective peristalsis, which will produce persistent intestinal sounds; 3.