In the frequency analysis of the herbs used in the herbal formulae for treating patients with COVID-19 according to the patients’ disease stages and PIs (Table 1, Table 2, Table 3, Table 4, Table 5 ), the results showed that there were 8 PIs and 23 herbal formulae for the mild stage (Table 1); 11 PIs and 31 herbal formulae for the moderate stage (Table 2); 8 PIs and 21 herbal formulae for the severe stage (Table 3); and 6 PIs and 23 herbal formulae for the recovery stage (Table 4) in the Chinese guidelines.