Aortic widening is when the inner diameter of the aorta exceeds the normal range. The normal inner diameter of the aorta is around 4cm, and if the width of the aorta exceeds this range, it can be diagnosed as aortic widening. The causes of aortic widening include atherosclerosis, severe aortic disease and other factors, as follows: First, atherosclerosis: with age, the degree of atherosclerosis gradually aggravates, and the pressure of the large arteries gradually rises, which will cause aortic widening, which does not have any clinical symptoms, does not need to be treated, and does not have any danger. Second, suffering from severe aortic disease: if you suffer from severe aortic disease, common diseases are aortic coarctation and aortic hematoma, both diseases are very dangerous, aortic coarctation will have severe chest pain, obvious symptoms of high blood pressure, and aortic hematoma patients with chest pain, usually persistent unrelieved chest pain.