【摘要】 目的 对空调旅客列车内环境进行卫生学研究，为今后空调旅客列车的技术改造和卫生管理提供卫生学依据。 方法 根据国家有关卫生标准、规范对国产25G、25K型空调旅客列车车厢内微小气候、空气质量、物理因素进行检测，测得的数据采用SAS9.0软件进行统计分析。 结果 温度、相对湿度的合格率较低;噪声和照度符合卫生标准;25K型车的CO和细菌总数低于25G型车，而CO 2 高于25G型车，硬座车厢的CO和CO 2 高于其他车厢，CO和CO 2 随列车的运行有递增的趋势，细菌总数在同一车型的不同时点和不同车厢差异无显著性。 结论 应加强空调列车空调设备的管理和保养，使其能够达到良好运行状态，在冬季取暖时应开启空调设备的加湿功能;要维持良好的空气质量，空调旅客列车的通风换气有待进一步改善。

    【关键词】 小气候;环境卫生

    【Abstract】 Objective A hygiene study was conducted on the inner environment of railway air condi-tioning passenger train to provide hygiene basis for the further technological transformations and hygienic supervision of air conditioning passenger train.Methods On the basis of related national health stan-dard，an examination was carried on to the microclimate，air quality and physical factors in the compart-ments of domestically produced25G and25K air conditioning passenger train.The data obtained were statistically analysed by software SAS9.0.Results The qualified rates of temperature and relative hu-midity were lower;the noisy and the degree of illumination conformed to the hygienic standard;CO and the bacterium count of25K trains were lower than those of25G trains ......