The examination of mobile turbid tones during physical examination is a test to determine the presence of peritoneal fluid in patients. If the patient has fluid in the peritoneal cavity and it reaches a certain amount, the possibility that the patient has fluid in the peritoneal cavity can be determined by the mobile turbid sound examination. At this time, the patient should be advised to further investigate the ultrasound of the abdomen to see if the patient has fluid in the peritoneal cavity. If necessary, a right lower abdominal puncture can be performed to see if fluid can be extracted. If the patient is judged to have peritoneal fluid, further investigation of the cause of the peritoneal fluid and whether the patient has signs of peritoneal irritation should be performed. If the patient has signs of peritoneal irritation that have spread to the mural peritoneum, the patient appears to have a lamellar abdomen. In this case, the patient is considered to have a perforation of the gastrointestinal tract or bile leakage due to liver rupture or trauma, which may cause chemical peritonitis. In such cases, a diagnostic puncture of the right lower abdomen is usually required. If non-coagulated blood is present, the patient is considered to have a ruptured spleen or liver, requiring an emergency laparotomy. If the patient has a simple peritoneal fluid collection with a high volume, peritoneal puncture and drainage can be actively considered, and routine and biochemical tests of ascites can be performed.