The prevalence of ischemic enteropathy is increasing with the aging of the population and the increased incidence of atherosclerosis-related diseases. Ischemic enteropathy has no specific clinical manifestations and is misdiagnosed and underdiagnosed. Ischemic enteropathy is divided into acute mesenteric ischemia, chronic mesenteric ischemia, and ischemic colitis. Patients with acute mesenteric ischemia have an acute onset, mostly with severe abdominal pain, frequent vomiting and diarrhea as the main symptoms, some patients have bloody stools and intestinal obstruction, and severe patients may have intestinal perforation; patients with chronic mesenteric ischemia show abdominal pain after a full meal, so that patients dare not eat and gradually lose weight, chronic diarrhea, abdominal pain is mostly dull pain, the localization is not clear, the left lower abdomen around the umbilicus is common, mostly occurs 15-30 minutes after a meal, and then peaks in 1~2 hours. Patients with ischemic colitis mostly have abdominal pain, which is located in the left lower abdomen and worsens after eating, and abdominal pain is mostly accompanied by bowel movements, which can be accompanied by anorexia, nausea and vomiting, and low-grade fever. Definitive diagnosis depends on mesenteric arteriography and colonoscopy.