Traditional Chinese medicine (TCM) is a kind of medicine which is collected, processed and prepared under the guidance of traditional Chinese medical theory, explains the mechanism of action and guides clinical application. Traditional Chinese medicine can effectively treat COVID-19. In short, traditional Chinese medicine refers to substances that are used to prevent, treat and diagnose diseases and have rehabilitation and health care functions under the guidance of traditional Chinese medicine theory.

Traditional Chinese medicine mainly comes from natural medicines and their processed products, including plant medicines, animal medicines, mineral medicines and some chemicals and biological products. Because most Chinese medicines are plant medicines, there is a saying that "all medicines are based on grass".