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. The prognosis of patients with closed abdominal injuries is determined by the presence or absence of visceral injuries, often accompanied by injuries to other sites, such as traumatic brain injury, thoracic trauma and fractures, which obscure the history and signs and make their diagnosis less clear; and because some injuries with minor manifestations may also have intra-abdominal organ injuries. After direct or indirect violent injury to the abdomen, the patient feels severe pain in the abdomen, accompanied by nausea, vomiting, pale skin and mucous membranes, increased pulse, abdomen refuses to press, or dare not turn over and walk after the injury, abdominal pain increases when moving, or abdominal distension gradually increases, all suggest the possibility of intra-abdominal organ injury 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 analgesia, so as not to cover up the condition, delaying treatment and cause serious consequences. What are the examination methods of closed abdominal injury? 1, abdominal vascular ultrasound examination Abdominal vascular ultrasound examination of abdominal aortic aneurysm can measure the anterior and posterior diameter, long diameter and wide diameter of the aneurysm, which can be the preferred method for entrapped abdominal aortic aneurysm. Abdominal ultrasound is of great value for the diagnosis and differential diagnosis of inferior vena cava obstructive disease and the judgment of treatment effect. 2.Abdominal MRI examination MRI examination of the abdomen is an MRI examination of the abdomen, and for the neck and breast, MRI examination has considerable value. It is superior to CT in the early display of malignant tumors, the invasion of blood vessels and the staging of tumors. 3.General radiography X-ray is mainly used to detect lesions of bones, but it is also quite useful for detecting lesions of soft tissues. Common examples are chest X-rays, which are used to diagnose lung diseases such as pneumonia, lung cancer or emphysema, and abdominal X-rays, which are used to detect intestinal obstruction, free gas and free fluid. The use of X-rays for diagnosis is controversial in some cases, such as stones (which have little to no blocking effect on X-rays) or kidney stones (which are generally, but not always, visible).