After intestinal obstruction comes to the hospital, the following means of examination to clarify: 1, laboratory tests: that is, blood tests, blood tests, the first item called routine blood, routine blood to understand the white blood cells, neutrophils, and hematocrit, to understand the degree of inflammation and infection in the body; electrolyte examination, because after a long time, intestinal obstruction patients are most likely to cause disorders of electrolyte metabolism in body fluids Acid-base toxicity, so we must understand the electrolytes of potassium, sodium, chloride and protein; 2. urine routine or stool routine occult blood, to understand whether there is occult blood in the stool, whether there is intestinal obstruction, intestinal necrosis or intestinal torsion; 3. Gas-liquid flat, gas-liquid flat is the intestinal tube dilatation, due to gravity, when people stand up when the film will be liquid below the gas will be above, forming a unique X-ray performance called gas-liquid flat, the existence of gas-liquid flat intestinal obstruction diagnosis is basically established; 4, CT examination: that is, tomography, in most cases, if the mechanical intestinal obstruction, you can determine the cause of obstruction, such as intestinal torsion or intestinal tumor If there are fecal stones, foreign bodies or roundworm masses in the intestinal cavity to form obstruction, the nature of intestinal obstruction can be basically judged through enhanced CT.