Ischemic intestinal colic (ischemicintestinalcolic), also known as chronic mesenteric ischemia, refers to recurrent episodes of severe postprandial paroxysmal epigastric colic or periaqueductal pain. Typical clinical manifestations: episodic epigastric pain after meals, weight loss due to often afraid to eat more, even bloating, diarrhea, etc. Distinguish from the following diseases: 1, gastric ulcer epigastric pain mostly appears 0, 5 to 1h after meals, gradually relieved by itself after 1 to 2h, but the attack has a cycle, easy to occur in early spring and late autumn season, taking antacids and mucosal protective agents pain can be relieved, gastroscopy can be determined. 2, chronic pancreatitis There is abdominal pain after eating, weight loss, diarrhea, indigestion and other symptoms, similar to this disease. It can be differentiated according to abdominal B-type ultrasonography, CT, MRCP, ERCP and abdominal plain film examination. 3, subphrenic arch ligament compression syndrome Most often seen in young women, male to female ratio of 1:3, manifested as intermittent dull pain in the upper abdomen unrelated to diet, accompanied by nausea, vomiting or diarrhea. Weight loss, wasting and malnutrition. On physical examination, a loud systolic murmur may be heard in the abdomen. The pathogenesis is mostly due to ischemia caused by compression of the origin of the celiac artery by the subphrenic arch ligament or the celiac ganglion. Angiography can confirm compression or stenosis and distal dilatation without the manifestation of atherosclerosis. 4. It should also be differentiated from gastrointestinal tumors, Crohn’s disease, restrictive enteritis, pseudomembranous enteritis, hemorrhagic enteritis, pancreatic cancer, biliary tract disorders, renal colic, etc. Some types of Crohn’s disease may be the chronic type of ischemic enteropathy, especially those who can find proliferative occlusive vascular lesions.