Aortic regurgitation is an incomplete closure of the aortic valve. Mild regurgitation may not require special treatment, while severe regurgitation may require valve surgery. A cardiac ultrasound with a regurgitation area of more than 5cm² is called severe regurgitation. Aortic valve regurgitation of 8.5cm, which is considered to mean 8.5cm², is considered to be severe regurgitation, and medication will not improve valve closure, and then it will not improve the regurgitation, and this regurgitation of blood will lead to repetitive work of the heart, resulting in enlargement of the heart. Medications can only treat the heart enlargement and cardiac insufficiency caused by aortic valve regurgitation. If the valve closure is not improved, the blood regurgitation will only lead to continued heart enlargement and deterioration of cardiac function, so surgery on the aortic valve is needed, such as replacement or repair, in order to improve the patient’s heart condition. Aortic valve regurgitation 8.5cm² cannot be cured by medication, it is a severe regurgitation and needs to be treated by a cardiac surgeon who specializes in surgical treatment.