After minimally invasive surgery for pulmonary nodules, the drainage tube can be removed 3~7 days after surgery, the specific time is mainly affected by the postoperative condition and the patient’s own recovery, and needs to be standardized under the guidance of the clinician. After minimally invasive surgery for pulmonary nodules, drainage tubes are placed mainly to drain pleural fluid and air. In most cases, the amount of postoperative fluid and air is relatively small, and the drainage tubes can basically be removed in 3-5 days; if the postoperative condition of the lungs is deviated, the drainage time will be prolonged; and the patient’s physical recovery is slow, and the drainage time will also be long. In most cases, the drain can be removed within 7 days. When obvious wheezing occurs during the postoperative recovery period, the amount of fluid in the pleural cavity increases significantly by examination, causing pressure on the lungs, and prompt medical observation is needed. After confirming the specific condition, standardized treatment will be carried out under the guidance of clinicians.