Regarding the appropriateness of air travel for pneumothorax, an article in the British Medical Journal (BMJ) May 14 gives the following advice: 1. Air travel does not increase the incidence of pneumothorax. 2. Patients with pneumothorax should not fly and should wait until the pneumothorax has resolved with imaging confirmation, or after closed drainage has been performed. 3.Patients with previous pneumothorax should decide whether to travel by airplane according to the recurrence rate of pneumothorax and the tolerance of pneumothorax attack. Unlike diving, air travel can increase the recurrence rate of pneumothorax. 4. The British Civil Aviation Authority recommends that air travel be allowed 2 weeks after healing from pneumothorax drainage. Interpretation 1: The British Medical Journal (BMJ) (weekly) is the journal of the British Medical Association, one of the four leading medical journals of global renown. The articles have a certain authority. Interpretation 2: During the ascent of an aircraft, the pressure inside the cabin is reduced to maintain the structural stability of its shell. Therefore, if a pneumothorax exists, the compression volume of the pneumothorax increases, thus increasing the instability of the respiratory and circulatory system. This may be the theoretical basis for the proposal. Interpretation 3: Turn into specific medical guidance: 1.Patients with pneumothorax can be considered for air travel after 2 weeks of complete pulmonary reopening confirmed by therapeutic chest X-ray, or with closed drainage for air travel. 2.Patients with pneumothorax after thoracoscopy can be considered for airplane travel after 2 weeks after chest radiographs confirm complete pulmonary reopening. 3.Patients with recurrent pneumothorax should be careful whether they choose to fly even after lung reopening, and a safer way is to consider flying again after thoracoscopy. If it is necessary to take a ride, it is also possible to consider. 4.After any thoracic surgery, it is recommended to consider airplane travel after 2 weeks of complete disappearance of the residual cavity as suggested by the chest X-ray.