Ischemic colic, also known as chronic mesenteric ischemia, refers to recurrent episodes of severe postprandial paroxysmal epigastric colic or periaqueductal pain. It is often seen in the elderly with a history of heart disease or peripheral vascular disease. It is more common in men than in women. Abdominal pain or abdominal discomfort is the most common symptom. The examination process: physical examination is mostly without special signs, and systolic murmurs can be heard on auscultation of the upper abdomen in about 80% of patients, but they are not specific and insensitive. Those with long duration of disease present with chronic appearance, malnutrition and wasting. The abdomen is tender, without pressure, and remains soft even during episodes of pain. Typical clinical manifestations: episodic epigastric pain after meals, weight loss due to often being afraid to eat more, and even bloating and diarrhea. The diagnosis is confirmed by the presence of evidence of ischemia and selective mesenteric arteriography showing three arteries, the abdominal aorta, superior mesenteric artery and inferior mesenteric artery, at least two of which show severe stenosis and occlusion sites and tortuous and thick collateral circulation supply arteries. In the elderly, a history of atherosclerosis suggests a potential possibility. Early clinical manifestations are atypical, and laboratory tests, radiological examinations and ultrasound Doppler are mostly normal, coupled with a variety of reasons for easy neglect of angiography, so early or preoperative diagnosis is very difficult.