To investigate the relationship between respiratory diseases onset and the meteorological factors in the same period and in a specific environment. By using the data of daily incidence of respiratory diseases obtained from Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine from January 1

1998 to December 31

2007

and the data of 16 items of meteorological factors (such as the average

maximum

and minimum temperatures

etc.

including meteorological factors derived) obtained from the Beijing Municipal Meteorological Observatory

mathematical statistical methods were applied to achieve the non-linear correlation analysis

or the correlation test

between the incidence of respiratory diseases and the time-related meteorological factors. The simple correlation coefficients of the relationship between the incidence of respiratory diseases and 9 meteorological elements

including the average values of temperature

maximum temperature

minimum temperature

degree of comfort

precipitation

vapor pressure

low cloud cover

change of vapor pressure

and change of wind speed

were all greater than 0.8286

in which one of the relationship between the incidence of respiratory diseases and the maximum temperature is as high as 0.9670. Statistical tests showed R>Rα=0.05 and F>Fα=0.05. The incidence of respiratory diseases was closely correlated to meteorological factors

such as air temperature

vapor pressure

precipitation

wind speed

etc. To a certain extent

this conclusion confirmed the scientificity and objectivity of the theory of five evolutive phases and six climatic factors (Wu Yun Liu Qi

五运六气) in Huang Di Nei Jing (黄帝内经

The Yellow Emperor’s Canon of Internal Medicine).