本文对３８例无症状无大气道功能障碍但已有小气道功能异常的成人吸烟者作了七年后通气功能随访，发现７６．３％的吸烟者小气道阻塞进一步加重，同时有不同程度的大气道功能异常；而戒烟的对照组通气功能未见明显加重。因此，作者认为吸烟者戒烟可改善或延缓肺功能障碍，且戒烟应尽早，应在小气道尚未受到损害之前。 This article 38 cases of asymptomatic non-airway dysfunction, but has had small airway dysfunction in adult smokers after 7 years of follow-up ventilation and found that 76.3% of smokers further aggravation of small airway obstruction, while varying degrees of Airway dysfunction; while smoking control group ventilation no significant increase. Therefore, the authors believe that smokers quit smoking can improve or delay pulmonary dysfunction, and quit smoking should be as early as possible, before the small airways have not been compromised.