Traditional chest operation incurs an incision scars extremely large and long incision curving around the chest from the back to the front. In addition, major chest wall muscles have to be divided and ribs have to be widely spread in order to gain access into the chest. Patients having this operation suffer from severe wound pain, slow recovery and frequent postoperative complications such as persisting pain even after the wound has healed. With the development of advances in minimally invasive video-assisted thoracoscopic surgery, the quality of patient care is greatly improved with reduced trauma, less post-operative pain and shorter recovery. It is widely used in: