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Because climate environment, living condition, job,etc. the factor one with, different in rates ill of asthmas regional. The survey reports of several foreign countries point out, the ill rate of children's asthma is 0.2% - 7.4%, the ill rate of adult's asthma is 1.1% - 9.9%. The ill rate of asthma of our country, investigate, it is about 0.5% - 2.0% according to some areas, have reports that are up to 5.29%. Asthma can take place in age any, adult morbidity roughly similar men and women have. Most domestic and international materials show, the countryside or relatively partial to the area of primitive life, the ill rate of asthma is lower than the developed city of industry obviously. One that is with industrialized intensity constant to raise, in recent years, aggravate and chemical development of industry of air pollution,etc., the morbidity of asthma has the tendency to increase gradually. In the forties, the asthma morbidity of the developed country was about 0.5%. According to American, in the past 30 years, the morbidity of American asthma has increased by 7 times, is 4% now. Shanghai of our country, Beijing, two pieces of regional part, investigates, the morbidity of the former's asthma, improved from 0.46% of 1958 to 0.69% of 1979, the morbidity of the latter was improved from 4.5% of 1959 to 5.29% of 1980. This kind of trend is worth causing the attention.
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