There is no uniform standard for the time of extubation after pneumothorax intubation. Generally, extubation can be considered when there is no air bubble overflow in the chest drainage bottle, the patient has no chest tightness and shortness of breath with normal feeling, and the chest X-ray or lung CT indicates that the pneumothorax disappears or has been very little. If it is a simple pneumothorax, the pneumothorax rupture is relatively small, about 3-5 days to review the chest X-ray situation improved, the self-conscious symptoms disappeared, no gas overflow from the drainage bottle, can be extubated. If the gas keeps leaking out of the chest cavity, we need to check two conditions: 1, there is no air leakage around the cannula, and the air leakage may not be sealed next to the drainage tube; 2, the lung blister rupture is relatively large, that is, continuous traffic pneumothorax, and it is difficult to heal by doing closed chest drainage alone, then we should consider thoracoscopic resection of the lung blister, and the tube may be removed 1-2 days after surgery.