The absence of a drain after lung nodule surgery is normal, and not all lung nodule surgeries require the placement of a drain, depending primarily on the intraoperative situation. Lung nodule surgery is now mostly performed thoracoscopically, and the surgery is performed for lung nodule resection or radical resection. If the lung nodule is small, the hemostasis in the surgical operation area is thorough, and the trauma management is ideal, there is usually little postoperative exudate or air leakage, and therefore the placement of drains can be dispensed with. For larger pulmonary nodules, the risk of postoperative exudate and air leakage is higher due to the larger amount of diseased lung tissue resected during the operation, so it is often necessary to place a drain in the chest cavity after the operation to avoid the accumulation of fluid and air from affecting the postoperative recovery. Therefore, the placement of drains after lung nodule surgery is all based on the surgical situation.