Dry cough one month after thoracoscopic surgery is associated with abnormal respiratory conditions, and the main causes include pneumonia, pleural irritation, and upper respiratory tract infection. 1. Pneumonia: Infection in the lungs after surgery, inflammatory lesions can cause increased airway sensitivity, leading to the manifestation of dry cough. 2. Pleural irritation: postoperative surgical access may cause pleural irritation, which can also lead to irritating dry cough. 3. Upper respiratory tract infection: recent upper respiratory tract infection, airway mucosal hyperreactivity can also cause related symptoms. If the dry cough persists one month after thoracoscopic surgery and is accompanied by chest pain and respiratory restriction, it is necessary to consult a doctor for observation and standardized treatment under the guidance of the clinician after diagnosis of the disease, so as to avoid delaying the disease.