Qingfei Paidu Decoction（清肺排毒汤） developed for the novel coronavirus disease（COVID-19） has been promoted and used nationwide as a general prescription. It consists of five prescriptions with modification based on syndrome differentiation

i.e. Xiaochaihu Decoction（小柴胡汤）

Maxing Shigan Decoction（麻杏石甘汤）

Shegan Mahuang Decoction（射干麻黄汤）

and Wuling Powder（五苓散）. Symptoms of patients with COVID-19 include fever

cough

sore throat

shortness of chest

shortness of breath

and fatigue. Under the guidance of the prescription based on syndrome differentiation

continuous fluctuating coldness and heat can be treated by Xiaochaihu Decoction（小柴胡汤）

formula for relieving fever and anti-inflammatory reconciliation; asthma and fever can be treated by Maxing Shigan Decoction（麻杏石甘汤）

good formula for lung heat cough asthma; cough and qi rushing

sore throat can be treated by Shegan Mahuang Decoction（射干麻黄汤）

special prescription for cough and asthma of cold-phlegm obstructing the lung. Fever and fatigued can be treated with Wuling Powder（五苓散）. In consideration that the epidemic pathogen is a cold and damp

Huoxiang（Herba Pogostemonis） can be added to dispel the dirty

dissipate dampness and bring down fever and protect the spleen and stomach

then compatibility with Zhishi（Fructus Aurantii Immaturus） and Chenpi（Pericarpium Citri Reticulatae） to activate qi to widen the chest

regulate qi-flowing for eliminate phlegm

Shanyao（Rhizoma Dioscoreae） can be added to nourish yin and benefit qi

to clear and invigorate lung and spleen

and to care for the middle jiao. The medicines are combined into a prescription with even property. It can clear lung heat

diffuse qi movement

transform qi for diuresis

and eliminate dirt and expelling toxin

so effect can be safely and quickly obtained.