呼吸系统疾病是影响儿童健康的主要问题,同时也是儿童入院的最常见病因。影响呼吸系统疾病发生的因素很多,其中近年来研究比较多的是环境空气污染,环境保护学者将煤烟型污染、光化学烟雾型污染、室内空气污染列为目前世界上3大空气污染问题。儿童正处于生长发育期,容易受到空气 Respiratory diseases are a major problem affecting children’s health and are also the most common cause of admission to children. There are many factors that affect the occurrence of respiratory diseases. Among them, the research on environmental air pollution is more in recent years. Environmental protection scholars regard the soot pollution, photochemical smog pollution and indoor air pollution as the three major air pollution problems in the world. Children are in a period of growth and development and are exposed to the air