In this study, we compared 2 groups of COVID-19 patients using the treatment regimen of the Ministry of Health, in addition, the research group used additional THAO MOC - SV in treatment support: clinical symptoms change from day 3; on the 5th day, only 45.97% of patients remained with clinical symptoms; on the 6th day, 17.24% of patients still had clinical symptoms; on the 7th day, only 1.14% of patients still had clinical symptoms;