The coronavirus disease 2019（COVID-19） belongs to the category of demp-warm epidemic disease in traditional Chinese medicine（TCM）. The pathogenic location of the disease is the spleen and stomach. As the disease progresses

it can spread to multiple organs such as the lung and the heart. The treatment is based on clearing heat

dispelling dampness and turbidity

and following the therapeutic principles of ventilating the upper

promoting the middle and infiltrating the lower. In severe cases

the treatment can be focosing on removing blood stasis and resuscitation. In the treatment

Dayuan Drink（达原饮） is used as the basic prescription

combining cold and heat

clearing heat and removing dampness. Flexible modification can shorten the patient′s fever time

reduce lung inflammation

and improve symptoms.