Lung nodule patients need to pay attention to fasting and water, quit smoking, stop anticoagulants, etc. before thoracoscopic surgery. Thoracoscopic surgery is a kind of minimally invasive thoracic surgery using modern camera technology and high-tech surgical instrumentation to complete complex surgery in the chest wall under the chest wall cannula or tiny incision, for the treatment of pulmonary nodule patients with less trauma, less bleeding and other advantages, need to pay attention to the anesthesia of the operation may make food and gastric reflux into the esophagus of the patient, resulting in respiratory distress and other symptoms. Therefore, for the safety of the surgery and to minimize complications, patients should be fasted and dehydrated for six hours before the surgery. If the patient is a long-term smoker, it is also important to stop smoking for at least two weeks prior to surgery, and in some cases, nebulization may be required to clean the airways. If the patient has been taking anticoagulants for a long time, they should also stop taking them for about five to seven days before surgery, depending on the doctor’s instructions. Pulmonary nodules are focal, rounded, hyperdense, solid or sub-solid lung shadows ≤3cm in diameter, which may be isolated or multiple, and are not associated with atelectasis, hilar lymph node enlargement or pleural effusion. It is recommended that patients with pulmonary nodules should follow the doctor’s instructions to make preoperative preparations, maintain a good mood, and actively cooperate with the doctor before undergoing thoracoscopic surgery.