Coronavirus disease-2019 (COVID-19) is highly contagious. In the early stages of the disease

the symptoms of coldness

dampness and depression in the lungs often appear

including fever

fatigue

soreness

dry cough

poor appetite

and white greasy tongue coating. During the development of the disease

the damp toxin epidemic often enters the inner and generates heat

and the damp heat epidemic toxin blocks pleurodiaphragmatic sites

the triple energizer and lungs

with manifestations of chest tightness

shortness of breath

exacerbation after exercise

or high fever without bringing down

poor appetite

bitterness in mouth

fatigue

diarrhea

loose stools

and yellow and thick tongue fur. As the pathogen can go outward or enter more deeply inside to cause death at the moment

it is the crucial time to treat the disease. In this study

Haoqin Qingdantang was used to clear dampness and heat

reconcile Shaoyang channel and recover the triple energizer

detoxify the dampness fever epidemic toxin

and block the toxin inside

with a good efficacy. This prescription focuses on smoothing the Shaoyang gallbladder channel and the triple energizer

and regards the spleen and stomach as the acquired essence. In the prescription

Erchentang reconciles the spleen and stomach

elevates clear Qi and lower turbid Qi. Bupleuri Radix is added to increase its detoxification function

and Paeoniae Rubra Radix is added to circulate the blood and prevent pathogen from the blood. When the condition improves

Sweet Wormwood Herb and talc are often withdrawn

and

Codonopsis

is added to nourish the spleen and stomach

to strengthening vital qi to eliminate pathogenic factor. Based on the cases of COVID-19 treated in Wuhan Jinyintan Hospital

this paper summarized some experience of applying Haoqin Qingdantang.