Infectious atypical pneumonia （severe acute respiratory syndrome

SARS） belongs to the category of infectious epidemic disease in TCM characterized by strong infectivity

rapid attacking

variableness

which is different to past common epidemic febrile disease such as wind-warm and spring-warm syndromes and to the past exogenous febrile disease. It is necessary to probe differentiation methods of syndromes of SARS and establish SARS syndrome differentiation model. Both the syndrome differentiation of We

Qi

Ying and blood and the syndrome differentiation of tri-Jiao are the methods for analyzing pathological changes of epidemic febrile diseases

determining the location of lesion

conjecturing the severity of disease

understanding the state of illness and inducing types of syndromes. The both methods have something in common to a considerable degree. Clinically

organic combination of the both methods in combination with syndrome of differentiation of six meridians can overall guide treatment of epidemic febrile diseases based on syndrome differentiation. Based on clinical manifestations of SARS

to determine "syndrome elements" of TCM and to combine with pathogenic factors and pathogenesis

and the traditional syndrome differentiation of six meridians

the syndrome differentiation of Wei

Qi

Ying

blood and tri-Jiao

can induce staging and developing law of SARS.