Hemodynamic obstruction is the obstruction of the passage of intestinal contents and the absence of blood flow in the intestinal canal. It is a group of clinical syndromes due to the failure of the intestinal contents to run smoothly to the distal end for various reasons, called intestinal obstruction, and is one of the common acute abdominal conditions in surgery. Clinically, it is often divided into mechanical intestinal obstruction, dynamic intestinal obstruction and hemodynamic intestinal obstruction according to its cause. The examination items are: 1. Abdominal vascular ultrasound Abdominal vascular ultrasound examination of abdominal aortic aneurysm, which can measure the anterior-posterior diameter, long diameter and wide diameter of the aneurysm, 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. Routine stool test can be used to find out whether there are bacterial, viral and parasitic infections in the digestive tract, to detect gastroenteritis and liver disease at an early stage, and also as a diagnostic screen for digestive tract tumors. Routine stool tests include tests for red and white blood cells, bacterial sensitivity test, occult blood test (OB), and detection of worm eggs. Routine stool examination is a necessary test to determine the health status of the human body. 3, rectal finger examination a method of examination of the rectum through finger examination. 4.Proctoscopy Proctoscopy is a bendable tube about 140cm long, with a light source with a miniature electronic camera at the end, and slowly enter the large intestine from the anus to check the lesions, tumors or ulcers in the large intestine. 5.Abdominal plain film Abdominal plain film is a picture of abdomen taken without introducing any contrast. When calcification occurs in some organ due to disease or there is a foreign body or stone that is impervious to X-ray, or there is free gas in the abdominal cavity, or there is an increase in gas or fluid in the intestinal cavity or the intestinal canal is dilated, there will be a difference in density and it will be shown on the picture. 6.Angiography Angiography refers to the introduction of contrast agent into the target blood vessels, so that the target vessels can be visualized for diagnostic purposes. Nowadays, angiography usually refers to digital subtraction angiography, which is a technique that uses computers to process digital image information to eliminate images of bones and soft tissues so that blood vessels can be clearly displayed. 7.Blood biochemistry six tests The blood biochemistry six tests are the preliminary examination of human blood condition, including 1, alanine aminotransferase, creatinine, urea nitrogen, serum glucose, triglyceride, total cholesterol. 8.Bone and joint MRI Bone and joint MRI is the use of MRI to scan the bones and joints, to observe the condition of the bones and to confirm the diagnosis of related diseases. 9.Urinary routine urine analyzer is also called dry chemical urine analyzer. The instrument is easy to operate and fast (11 types of urine components can be detected in as little as 10s).