The exact etiology of aortic coarctation is still unclear, and may be related to factors such as increased aortic wall tension, structural abnormalities of the aortic wall, and medical injury. 1. Increased aortic wall tension: can be caused by hypertension, aortic constriction, trauma and other factors. 2. Abnormal aortic wall structure: it can be caused by atherosclerosis, familial hereditary aortic coarctation, aortitis, aortic aneurysm, hereditary connective tissue disease, etc., which leads to structural changes of the aortic wall and may induce aortic coarctation. 3. Medical injury: such as heart valve surgery or aortic surgery, intra-aortic contrast injection, etc., can induce aortic coarctation. 4. Others: such as smoking, alcohol consumption, pregnancy, etc., can also have a certain relationship with the development of aortic coarctation. Patients with aortic coarctation should consult a doctor in time to find out the cause of the disease and carry out the corresponding treatment under the guidance of the doctor, and should not make blind judgment on their own in order to avoid delaying the condition.