Coronavirus disease-2019 (COVID-19) outbreaks were spreading rapidly around the world in early 2020. This disease is within the category of "damp epidemic" and "damp toxin epidemic" in traditional Chinese medicine

with lung and spleen as the lesion focuses

while dampness and toxin as especially prominent properties. Through clinical observation

we found that dampness would often transform into damp heat during the development and evolution of the disease

and the "triple energizer" treatment was an important therapeutic method

eliminating pathogens through purgation and diuresis: for those with damp-heat accumulation toxin diffused to the triple energizer

we could use Ganlu Xiaodudan as primary prescription

which can spread the upper part

smooth the middle part and infiltrate the lower part

so as to provide a way out for the pathogenic factors and regulate Qi movement. For those with damp-heat in Shaoyang channel

we could use Haoqin Qingdantang to clear heat and promote diuresis

harmonize Shaoyang

eliminate damp-heat and epidemic pathogenic factor. For those with pathogen hidden in membrane source dampness trapping and hidden heat

we could use Dayuanyin to eliminate pathogens between interior and exterior parts

and regulate Qi movement. At the same time we shared three typical cases treated in Wuhan

and conducted an in-depth analysis in this study. Clinically

the method of elimination of pathogens through purgation and diuresis is mainly used in the early and middle stage of this disease. When the disease is still located in Qi system

it also can be applied to mild

ordinary patients and severe patients that have accurate syndrome differentiation. In such cases

it can effectively improve symptoms

reduce pathogenic toxin

truncate and reverse the course of disease

give way to pathogen

and avoid disease aggravating.