Total thoracoscopic extracorporeal cardiac surgery, which is cardiac surgery done under minimally invasive incisional femoral artery and vein cannulation with extracorporeal circulation and total thoracoscopy, is a major advancement in the field of cardiac surgery technology in the 21st century. Compared with conventional extracorporeal circulation surgery, the operation is less traumatic and does not require longitudinal splitting of the sternum; the patient recovers quickly and uses less blood products. Common cardiac surgical diseases: atrial septal defect, ventricular septal defect, pulmonary vein ectopic drainage, triple atrial heart, left atrial mucinous tumor, mitral valve lesions, etc. can be treated with total thoracoscopic completion of extracorporeal circulation surgery.