The disease name of coronavirus disease 2019（COVID-19） in traditional Chinese medicine（TCM） is "pulmonary epidemic". The disease is caused by the different properties of pathogen such as coldness

dampness

heat

toxin. In the beginning

the core pathogenesis is lungs and spleen disturbed by external pathogen

and there is heat（fire）

coldness

dampness

toxin

phlegm

stagnation

knot

stasis

dryness

deficiency and other pathological changes in the pathological process. The method of clearing heat

dispelling coldness

eliminating dampness

removing toxicity

dispelling phlegm

removing stagnation

attacking knot

removing blood stasis

moistening dryness and tonifying deficiency should be given; In the early and middle stages

pathogen is in defensive qi

and the basic treatment principal is to remove heat to clear and disseminate defensive qi. Toxic coldness and tonic products should be used with caution. For the severe or critical type with the pathogen damaging lung collaterals attention should be payed to the application of prescription with cooling blood and dissipating blood

and early intervention of TCM can effectively prevent the disease development.