The clinical diagnosis of closed abdominal injury presents with symptoms such as abdominal pressure pain, rebound pain, muscle tension, mobile turbid sounds, narrowing or disappearance of the hepatic turbinate, and diminished or absent bowel sounds. What can cause closed abdominal injury? Closed abdominal injuries are commonly seen in production, traffic and life accidents. The patient’s prognosis is determined by the presence or absence of visceral injury, often accompanied by other site injuries, such as traumatic brain injury, thoracic trauma and fractures, which obscure the history and signs and make the diagnosis not easy to clarify; and because some injuries with minor manifestations may also have intra-abdominal organ damage. Therefore, closed abdominal injuries must be closely observed, repeatedly examined, and properly treated so as not to delay diagnosis and treatment. Loss of the hepatic turbinate is mainly seen in heavy hepatitis, due to the occurrence of liver failure, massive necrosis of hepatocytes and progressive shrinkage of the liver, resulting in loss of the hepatic turbinate. In addition, in cases of massive ascites or right pleural effusion, which severely affects percussion, it can also lead to loss of pseudohepatic turbid circles and free gas covering the surface of the liver, causing the percussion sound to change to a drum sound, as in the case of gastrointestinal perforation. After direct or indirect violent injury to the abdomen, the patient feels severe abdominal pain, accompanied by nausea, vomiting, pale skin and mucous membranes, increased pulse, abdominal refusal to press, or after the injury dare not turn over and walk, abdominal pain increases when moving, or abdominal distension gradually increased, all suggest the possibility of intra-abdominal organ damage or internal bleeding. At this time, the patient should be kept stable, quickly sent to the hospital, pay attention to the application of strong drugs such as morphine pain relief, so as not to cover up the condition, delaying treatment and cause serious consequences.