Lung occupancy surgery is major surgery, and surgical procedures include traditional open chest exploration and minimally invasive thoracoscopic surgery, both of which are classified as level IV surgery. Lung occupations are growths in the lungs, including lung nodules, masses, and lung cancer, etc. Surgery requires removal of localized lung tissue or lobes, including the mass. In the case of malignant tumors of the lungs, the scope of the surgery also needs to be expanded, and if necessary, the regional lymph nodes also need to be cleared. Currently, lung surgery consists of traditional open heart surgery and minimally invasive surgery. Open-heart surgery involves making an incision directly through the chest wall and using instruments to prop open the chest cavity and directly expose the surgical site, which makes the surgical incision large and traumatic. Minimally invasive surgery involves making small incisions in the chest wall and performing thoracoscopic resection of lung tissue or lobes, which is relatively less invasive. The two surgical methods of lung occupation are both technically demanding and difficult, with high surgical risk, and are classified as level IV surgeries, which are the highest level of surgery at present, and therefore major surgeries. It is recommended that patients with lung occupation should seek medical treatment in time and standardize the treatment under the guidance of professional doctors.