The construction materials used in highrise building of urban modernization and central heating,cool-making and close rooms cause indoor radon pollution as one kind of noticeable harm.

• 城市现代化建设中高层建筑使用的建筑材料及其采用的集中供暖、制冷,以至房间常常处于封闭状态,使得室内氡污染成为一种不容忽视的环境危害。