Pneumothorax occurs when the patient has varying degrees of chest tightness, chest pain, dyspnea, serious can endanger the patient’s life, so the pneumothorax can not be smoked, to adhere to oxygen therapy. Smoking will produce the following effects: First, smoking can induce coughing, coughing up sputum, coughing frequently and violently is not conducive to the healing of the pleural rupture, so that the pneumothorax is difficult to heal. Second, smoking will induce spasm of the airway, making the original chest tightness and dyspnea of the pneumothorax patients worse. Third, smoking will further aggravate the airway mucosa immunity and resistance to decline, inducing the formation of respiratory tract infection, and can form pneumonia or pleural effusion. In short, smoking is prohibited in pneumothorax, and it is recommended not to smoke even after pneumothorax is cured, because smoking can aggravate the degree of pulmonary alveolus, thus further increasing the recurrence rate of pneumothorax.