In 1957, Brantigan1 applied lung volume reduction surgery (LVRS) to the treatment of emphysema. In 1995, Cooper2 reused this operation and obtained remarkable benefit in patients with chronic obstructive pulmonary disease (COPD). Although there are still some doubts about the effect of LVRS,in the past 10 years, a lot of clinical information approved that LVRS can give benefit to more than 70% of COPD patients. At present, a series of researches in long-term investigation and function evaluation such as NETT3 have got elementary affirmative conclusion about some disputative problems.