The molecular docking results showed that the key components are kaempferol, quercetin, luteolin, glycyrrhetinic acid, stigmasterol, indigo had good binding ability with SARS-CoV-2 3CL (Mpro) and ACE2, acts on COVID-19 through multiple components, multiple targets, and multiple pathways [8]. Here, ACE2 is linked to COVID-19.