Surgery is not always necessary for pulmonary bullae, but the following pulmonary bullae require surgery: 1. pulmonary bullae are at the edge of the lung, which can easily rupture and cause pneumothorax and pose a threat to life. 2. although a pulmonary bullae is in the middle of the lung, it is large and compresses the normal lung tissue, which requires surgery. There are some pulmonary blisters that are very small and are dense-like structures, and rupture can also cause pneumothorax and require surgery. Some recurrent pneumothorax pneumothorax, no matter where it is, needs to be removed surgically. The surgical procedure is to remove the diseased pneumothorax and do pleural fixation, the long-term effect is still ideal and can effectively reduce the incidence of pneumothorax.