Thoracoscopic cardiac surgery is a newly developed and minimally invasive surgical approach. It is very different from conventional open-heart surgery. It is a new minimally invasive cardiac surgery technique that uses modern television camera technology and high-tech surgical instruments and equipment to complete complex intrathoracic surgery under a chest wall trocar or a tiny incision, which has changed the concept of treatment of some cardiac surgical diseases and is the future direction of cardiac surgery. This kind of TV thoracoscopic surgery is done through two to three “keyholes”, with the assistance of TV image surveillance to complete the operation that used to be performed by traditional open-heart surgery. It is essentially a “lumpectomy”, which is the same as putting the surgeon’s eyes inside the patient’s chest cavity to perform the surgery. The advantages of thoracoscopic surgery are very obvious: 1. Small surgical trauma: thoracoscopic surgery can be completed by making three small 1.5 cm long incisions in the chest wall. The surgery no longer splits the sternum. 2, less surgical bleeding: lumpectomy invasive small, less bleeding, short hemostasis time, some operations do not even need blood transfusion. 3.Light postoperative pain: Patients have light pain after thoracoscopic surgery, and can get out of bed in 24 hours, and can participate in physical activities 2-4 weeks after surgery. 4.Less postoperative complications. 5.Small incision scar and beautiful.