Loss of bowel sounds refers to the absence of any bowel sounds even after listening to bowel sounds in various regions of the abdomen for at least 5 minutes, which is usually considered to be caused by inflammatory stimulation, vascular embolism, intestinal perforation, intestinal obstruction and other factors. For those who have lost bowel sounds, we should first actively search for the primary cause and then treat the primary cause: 1. inflammatory stimulation: such as gastrointestinal tract, appendicitis, cholecystitis, acute peritonitis, necrotizing colitis, etc., inflammation stimulates the intestinal wall and causes intestinal dysfunction resulting in the loss of bowel sounds; 2. vascular embolism: such as mesenteric vascular embolism, usually manifests as a burst of hyperactive bowel sounds and then disappears, followed by severe pain in the middle of the abdomen and around the umbilicus The intestinal tract perforation: such as duodenal ulcer perforation, intestinal perforation, intestinal contents flowing out, stimulating the intestinal wall can also lead to the disappearance of intestinal sounds; 4, intestinal obstruction: such as paralytic intestinal obstruction, mechanical complete intestinal obstruction, strangulated intestinal obstruction, etc., can be manifested as the disappearance of intestinal sounds, abdominal distension with general discomfort, patients may have fever and abdominal pain. In addition, abdominal trauma, electrolyte disturbance, sepsis, hypovolemic shock and other factors may cause the disappearance of bowel sounds. Therefore, if a patient has sudden onset of severe abdominal pain, disappearance of bowel sounds, abdominal firmness like a plate, frequent vomiting or even vomiting blood, high fever and respiratory distress, he/she should immediately seek medical attention to identify the cause and treat the symptoms. Generally, fasting, gastrointestinal decompression, dissection and abdominal irrigation are adopted for treatment.