Surgery for pulmonary nodules mainly removes the nodules in the lungs by various means, and may cause a series of complications after surgery, mainly including fluid pneumothorax, pneumonia and chest wall infection. 1. Liquid pneumothorax: after the surgery, the chest cavity will be connected with the surrounding tissues, resulting in the appearance of gas in the chest cavity, in addition, with the leakage of the pleura will cause the accumulation of liquid, which will further lead to the formation of liquid pneumothorax. 2. Pneumonia: after surgery, there is a possibility of intrapulmonary infection leading to the appearance of pneumonia, which further leads to cough, fever and other symptoms. 3. Chest wall infection: local chest wall injury after surgery can cause pathogenic infection, leading to local redness, swelling, fever, and ulceration. If you have obvious cough, chest pain and dyspnea after lung nodule surgery, you need to consult a doctor in time for observation and diagnosis of the specific physical condition, and then carry out standardized treatment under the guidance of the clinician to avoid delaying the condition.