The diameter of the ascending aorta in normal people is generally below 30 mm. If the ascending aorta widens slightly but the diameter is less than 35 mm, the impact is not significant at this time. If the ascending aorta widens to a diameter of more than 35 mm, it suggests some cardiovascular system diseases such as hypertension, ascending aortic aneurysm, ascending aortic coarctation, ascending aortitis, etc., which have serious effects. 1. Hypertension: The ascending aorta widens due to increased peripheral vascular resistance and elevated blood pressure. Clinical symptoms such as headache, fatigue, arrhythmia, etc. can lead to many other life-threatening complications. 2. Ascending aortic aneurysm: caused by increased tension or structural abnormality of the ascending aorta, which may manifest as dull pain or stabbing pain, and may be accompanied by compression symptoms. Ascending aortic aneurysm has the risk of rupture and bleeding, which is life-threatening. 3. Ascending aortic coarctation: As the pressure of blood flow increases on the wall of the vessel, the wall breaks down and blood flows into the wall of the vessel through the break to form an ascending aortic coarctation. This is a serious cardiovascular emergency that involves multiple organ systems and has a high early mortality rate. 4. Ascending aortitis: it can involve the ascending aorta and cause damage to the vessel wall. Clinical symptoms such as headache, dizziness, palpitations (rapid heartbeat, often accompanied by panic) and so on will appear in the head and neck, hypertension in the upper limbs and insufficient blood supply in the lower limbs. In addition to the above diseases that can lead to widening of the ascending aorta, some congenital factors such as Marfan syndrome, valvular insufficiency, and other diseases can also appear in the widening of the ascending aorta. Patients should not judge or diagnose on their own based on a single test result. They should consult a doctor in time, who will analyze the situation and make a clear diagnosis according to the specific circumstances.