Bronchial valve lung decompression is an effective treatment for emphysema that has been developed in recent years. The selection of cases is critical, usually with highly heterogeneous emphysema, hyperinflated lungs, significantly increased residual air volume, and significantly limited activity tolerance. If severe expiratory failure, pulmonary hypertension, and giant pulmonary bullae are present, they are generally not suitable. Some giant pulmonary blisters can be treated, but the risk of pneumothorax is higher and there is a risk of poor outcome. The preoperative evaluation is very important for the treatment, and it is not the usual preoperative examination. This treatment is more expensive, with a single live flap costing $35,000, and usually 2-3 are placed per patient, and some patients may need 5. This is something to consider. There are also some complications that can occur, and although most are not too serious, they are still quite dangerous because they are done in patients with very poor lung function.