目的　探讨迅速减压对兔支气管肺泡灌洗液和血液中血管紧张素转换酶、乳酸脱氢酶及碱性磷酸酶的影响。方法　将 30只新西兰白兔随机分为慢上升减压组和迅速减压组 ,测定兔支气管肺泡灌洗液和血液中的血管紧张素转换酶、乳酸脱氢酶及碱性磷酸酶活性。结果　迅速减压组兔支气管肺泡灌洗液中这 3种酶的活性均有不同程度的升高。结论　这些指标同时升高 ,可以提示发生了迅速减压肺损伤 ,其升高程度与肺受损的程度一致。 Objective To investigate the effects of rapid decompression on the changes of angiotensin converting enzyme, lactate dehydrogenase and alkaline phosphatase in bronchoalveolar lavage fluid and blood in rabbits. Methods Thirty New Zealand white rabbits were randomly divided into slow decompression group and rapid decompression group. The activities of angiotensin converting enzyme, lactate dehydrogenase and alkaline phosphatase in the bronchoalveolar lavage fluid and blood were measured. Results The activity of these three enzymes in the bronchoalveolar lavage fluid of rabbits with rapid decompression was increased to some extent. Conclusions Both of these indicators increase at the same time, which can prompt rapid decompression of lung injury, the degree of which is consistent with the extent of lung damage.