The symptoms of aortic valve insufficiency are related to the severity of the valve closure, as follows: 1. In mild aortic valve insufficiency, there are no significant discomfort symptoms because the heart itself has its own compensatory function. 2. Palpitations. In patients with early aortic valve insufficiency, they feel discomfort in the precordial region, and their heart rate may be fast or slow, with or without arrhythmias on the electrocardiogram. 3. nod sign. In this disease, the left ventricle needs to receive normal blood flow from the left atrium during diastole, and additionally receives blood from the incomplete aortic valve backflow, resulting in increased pulse pressure difference, high power pulsation of large blood vessels, and regular head nodding movement in line with the heartbeat, with a strong sense of head fluctuation. 4. chest pain and shortness of breath. In severe degree of aortic valve insufficiency, angina symptoms such as chest pain and shortness of breath may occur after paroxysmal exertion caused by insufficient blood supply to the coronary arteries of the heart. 5. dyspnea, cough and sputum. Further aggravation of the disease may lead to left heart failure, paroxysmal dyspnea, telangiectatic breathing, and even coughing and coughing of pink foamy sputum in acute pulmonary edema.