The heart has four valves. Between the left atrium and ventricle is the mitral valve, which is the most vulnerable. Between the left ventricle and the aorta is the aortic valve. Between the right atrium and ventricle is the tricuspid valve, and between the right ventricle and the pulmonary artery is the pulmonary valve. The presence of the valve allows blood flow in only one direction forward. In our country, the most common cause is heart valve stenosis or incomplete closure due to rheumatic disease, mostly seen in the mitral valve. Secondly, with aging, there are more and more patients with degenerative valve degeneration. Myocardial ischemic factors in coronary artery disease are increasingly significant. Calcium deposits can lead to severe valve stenosis, mostly in the aortic valve. Surgery should be considered once the following symptoms occur: shortness of breath, exertional dyspnea, fatigue, frequent coughing especially at rest, palpitations, lower extremity edema, chest pain, and syncope, and cardiac ultrasound shows significant valvular disease. Valve surgery is usually performed under general anesthesia with extracorporeal circulation and can involve either shaping or replacement depending on the situation. In contrast, conventional surgery requires a complete sternotomy and is more invasive. With advances in minimally invasive cardiac surgery techniques, small incision minimally invasive surgery can be performed on some patients with valve disease. The surgeon completes the procedure through a few small holes between the ribs, or small intercostal incisions, or small sternal incisions, with the aid of a lumpectomy, or more advanced robotic technology. The benefits of this minimally invasive technique: less pain, fewer complications, faster recovery, aesthetics, and smaller surgical scars. Our cardiac surgery department takes full advantage of this technique to perform conventional mitral, aortic, and tricuspid valve replacement or plication. This technique is also well suited for the surgical treatment of atrial septal defects, atrial mucinous tumors, and atrial fibrillation.