Objective To discuss and summarize the distribution law of traditional Chinese medicine syndromes and syndrome elements of bronchial asthma during attack.Methods According to present diagnostic criteria of syndromes of asthma

a prospective investigation was carried out in the way of clinical epidemiology.Based on the principle of evidence-based medicine

the database was established with Epidata3.0.The enrolled patients’ information collected with four TCM diagnostic methods was recorded and checked.The analysis on the frequency of TCM syndromes and syndrome elements was made with the software SPSS13.0.Results The most frequent syndrome of asthma was heat syndrome

then

cold syndrome

wind syndrome

and deficient syndrome.The first three syndrome elements of asthma were phlegm

qi stagnation and wind.And the diseased organs were lung

spleen and liver.Conclusion During the attack

the asthma is mainly of heat syndrome accompanied with phlegm and qi stagnation

indicating that the syndrome elements covers well the differentiation of syndromes.