Lung effusion should refer to pleural effusion, pleural effusion after lung nodule surgery, if it is a small amount can be absorbed by itself, if it is a large amount, then it can be punctured and aspirated and drain can be placed, and if it continues to increase, then it will be considered that hemothorax will be reopened after surgery. 1. Thoracentesis: Thoracentesis is performed to aspirate the fluid as much as possible, and if the drainage is not smooth, urokinase can be injected during the aspiration to prevent pleural adhesion. 2. Placement of drainage tube: It is placed in the abdominal cavity to drain the fluid from the lungs to the outside of the abdominal cavity, and the fluid can be gradually discharged. 3. Reoperation: For persistent bleeding caused by pulmonary nodule surgery, thoracoscopic or open thoracic surgery should be performed as soon as possible to ligate the blood vessels and drain the fluid. Encourage the patient to carry out respiratory function training to help discharge the fluid. If the condition permits, advise the patient to increase the dietary nutrition and eat high-protein food and vitamin-rich food.