If it is the patient's first pneumothorax occurrence and they are relatively young with no obvious lung bullae on the surface of their lungs, then seeing the emergency department should be sufficient to resolve the issue. Generally, if less than 20% of the lung is compressed, the patient can simply breathe oxygen at home or at a community hospital to gradually recover. However, if the patient is older and the degree of pneumothorax exceeds 20%, even reaching above 30%, it is advisable to insert a small tube between one and two millimeters into the pleural cavity to extract the air. At this point, it is recommended to consult thoracic surgery. After the air is released, a CT scan is also necessary to check for obvious lung bullae or small tears on the lung surface. If a small tear is found, it is best to use minimally invasive thoracoscopy to suture or seal the tear to prevent recurrence. Therefore, if possible, directly consider consulting thoracic surgery for pneumothorax; if thoracic surgery is not available, then consider seeing the emergency department.