直接吸烟对人体的健康危害已是众所周知。近十几年来,人们开始注意到被动吸烟对人体健康的影响。为此,我们于1990年7月～12月对两所中学学生的被动吸烟情况进行了调查,同时做了肺功能检测。现将结果报道如下。对象和方法 1 对象选择 1.1 被动吸烟组:65人均为男性中学生。年龄12～18岁。无心肺疾病史,体查及胸透,心电图正常。出生后一直随父被动吸烟者42人, The direct health effects of smoking on the human body are well known. In the past decade or so, people began to notice the impact of passive smoking on human health. To this end, we conducted a survey on the passive smoking status of two middle school students from July to December 1990 and conducted a lung function test. The results are reported below. Subjects and methods 1 object selection 1.1 passive smoking group: 65 per male male high school students. Age 12 to 18 years old. No history of heart and lung disease, physical examination and chest X-ray, normal ECG. 42 passive smokers have been fathers since birth,