根据世界卫生组织(WHO)的定义,被动吸烟指不吸烟者每周平均有1d以上吸入烟草烟雾超过15min[1]。被动吸烟又称为“二手烟”或“环境烟草烟雾”。经研究,被动吸烟不存在安全暴露水平,即“吸入就有害[2]”。与国外女性情况不同,我国女性的主动吸烟率(3.1%)并不高,但被动吸烟暴露率 According to the definition of the World Health Organization (WHO), passive smoking refers to non-smokers inhaling tobacco smoke for more than 1d on average every week for more than 15 minutes [1]. Passive smoking, also known as “secondhand smoke” or “environmental tobacco smoke.” After research, passive smoking does not exist the level of safety exposure, that is “harmful to inhalation [2].” Different from foreign women, the active smoking rate of Chinese women is not high (3.1%), but the rate of passive smoking exposure