在中国,肺癌已经成为各大城市居民各种癌症中死亡率最高的一种肿瘤。广州肺癌死亡率居全国第三位,仅次于重庆和上海;而且,七十年代初以来,肺癌死亡率一直居各种恶性肿瘤死亡率的首位。由于肺癌的发生要经过一个较长时间的潜隐期,而且可能是多因素共同作用的结果,所以研究肺癌流行病学资料的积累要有长期性与广泛性。流行病学所提供的线索,也需要有直接证据的证明。我们从1980～1988年调查了本市6000多例肺癌死者,并且与有关单位合作,对市区室内、外空气污染水平,烧不同燃料的家庭室内空气污染水平和家庭主妇尿中B(a)P含量,以及不同建筑材料的室内放射性物质水 In China, lung cancer has become the tumor with the highest mortality rates among various cancer types in major cities. Lung cancer death rate in Guangzhou ranks third in the country, second only to Chongqing and Shanghai; and, since the early 1970s, lung cancer mortality has been ranked first in all kinds of malignant tumor mortality. As the occurrence of lung cancer to go through a longer period of latent period, and may be the result of multi-factor interaction, so the study of lung cancer epidemiological data accumulation should have a long-term and extensive. The clues provided by epidemiology also require proof of direct evidence. We surveyed more than 6,000 lung cancer deaths in our city from 1980 to 1988 and cooperated with relevant agencies to investigate the indoor and outdoor air pollution levels in urban areas, the levels of indoor air pollution with different fuels, and the urinary B (a) P content, as well as indoor radioactive material water of different building materials