疾病是机体在一定病因的损害性作用下,使人体系统在一定层次和一定范围内失序、失调、失稳而发生的异常生命过程。大量研究证实:肺气肿的发生就是由于各种损害性因子,通过不同的途径使肺内蛋白水解酶系统及其抑制因子间平衡失调的结果。本文试图从肺内酶平衡失调的角度对肺气肿的发生、发展、诊断及治疗进 Disease is the body under the damaging effect of a certain cause, so that the human body system at a certain level and within a certain range of disorder, disorder, instability and the occurrence of abnormal life processes. A large number of studies have confirmed: emphysema occurs due to various damaging factors, through different ways to make the balance between the pulmonary proteolytic system and its inhibitory factor results. This article attempts to emphysema from the perspective of pulmonary imbalance point of emphysema, development, diagnosis and treatment