Aortic coarctation is usually characterized by severe chest pain, which can be confirmed by physical examination and auxiliary examination. 1. Physical examination: measure the blood pressure of the limbs, compare the blood pressure of the upper limbs bilaterally, and there will be a big difference between the values of the upper limbs and lower limbs; the respiratory sounds of the lungs will be weakened by auscultation, and the sound of small blisters rupturing can be heard in the case of heart failure; there will be an abnormal murmur in the area of the aorta by auscultation in the heart examination. 2. Auxiliary examination: arterial blood gas analysis can check the oxygen concentration, partial pressure of oxygen, acidity and alkalinity in the blood. Imaging examination: echocardiography, CT angiography, aortography. It can generally clarify the location of the lesion as well as its severity. Coagulation function test D-dimer test: clarify whether there is coagulation dysfunction and exclude whether there are other diseases. It is recommended to consult a doctor in time and follow the doctor’s instructions to carry out the corresponding examination and treatment.