The aortic valve is located between the left ventricle and the ascending aorta and acts as a valve. The valve closes after blood enters from the left ventricle to the ascending aorta to prevent blood regurgitation. Mild insufficiency of the aortic valve means that after blood hits the aorta from the left ventricle, the valve cannot close completely and a small amount of blood will flow back from the aorta into the left ventricle. In most cases, mild insufficiency can be treated without further treatment and the valve condition and heart structure and function will be reviewed regularly. However, if the patient will have symptoms such as chest tightness and shortness of breath, panic, palpitations, and decreased activity endurance, he or she should go to the hospital promptly to clarify the severity of the patient’s disease through ECG, cardiac ultrasound, physical examination by the doctor, and medical history questioning before deciding on the next step of treatment.